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  • 51.
    Johansson, Christian
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Larsson, Tobias
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Tatipala, Sravan
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Product-Service Systems for Functional Offering of Automotive Fixtures: Using Design Automation as Enabler2017Inngår i: Procedia CIRP: 9th CIRP Conference on Industrial Product/Service-Systems (IPSS), Copenhagen, Elsevier, 2017, Vol. 64, s. 411-416Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In production of automotive components, control-measuring is an important activity to assure that geometries meet expected tolerances. This is done via randomly taking parts out of production for control-measuring in a fixture. This fixture is both a tedious and repetitive product to design and configure. The aim of this paper is therefore to present an approach to adopt a design automation strategy towards supporting the configuration of fixtures and to discuss opportunities for moving towards a Product-Service System-paradigm in this domain. This paper reports on a development of a design automation demonstrator to configure fixtures for control-measuring. The demonstrator has been developed in a commercial CAD-environment and will be deployed through a web-based interface. The paper concludes with a discussion on PSS-opportunities and how to drive this with a Knowledge-Based Engineering-modelling approach. 

  • 52. Johansson, Henrik
    et al.
    Larsson, Tobias
    Luleå University of Technology.
    Information flow and simulation support in the product development process1998Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper consists of a case study of the product development process at Indexator AB, manufacturer of rotators for heavy equipment. The process has been studied concerning the information flow and computer support in the engineering design department and its interacting departments. It is shown that the company has a clear view of how information flows and which computer tools they use in the different parts of the processes. The advantage of using computer tools for analysis and planning is seen. Ways of communication and information flows concerning the design processes can sometimes happen in unplanned ways. Lack of integration between the different computer tools leads to unnecessary regeneration of the product information in the different parts of the development process.

  • 53. Karlsson, Lennart
    et al.
    Löfstrand, Magnus
    Larsson, Andreas
    Luleå University of Technology.
    Larsson, Tobias
    Luleå University of Technology.
    Törlind, Peter
    Elfström, Bengt-Olof
    Isaksson, Ola
    Information driven collaborative engineering - enabing functional product innovation2005Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper discusses Information Driven Collaborative Engineering (IDCE) as an enabler of Functional Product Innovation (FPI). It discusses challenges that arise in functional product development and how distributed collaborative work will be affected. Finally the paper proposes bringing the domains of Distributed Collaborative Engineering (DCE) and Knowledge Enabled Engineering (KEE) together to form IDCE, in order to meet these challenges.

  • 54. Kastensson, Åsa
    et al.
    Larsson, Andreas
    Luleå University of Technology.
    Larsson, Tobias
    Luleå University of Technology.
    Embracing risk to pursue product innovation in automotive industry2010Konferansepaper (Fagfellevurdert)
    Abstract [en]

    A company’s ability to successfully introduce radically new products and services is a key success factor for sustaining competitive advantage. This is particularly true for the automotive industry, where smaller manufacturers with niche products struggle to compete with the large-scale efforts of their bigger competitors, and are thus in desperate need to innovate their way out of the current crisis. A key challenge for companies seeking innovation is how to better understand the role of risk in innovative practice. The purpose of this study is to investigate how managers within an automotive company perceive the concept of innovation and the relation between innovation and risk. The study is based on interviews with fifteen managers representing a cross-section of disciplines. The analysis of the informants’ answers resulted in two overarching themes, “novelty” and “value”, which were further broken down into seven sub-themes to highlight different facets of innovation that were raised by managers from these disciplines. While there were many similarities in the perceptions, the most striking differences related to; 1) innovation as being about the “combination of things to something new”, and 2) innovation as being about increasing “customer value”. Several informants noted that risk taking is a success factor to achieve innovation, but they also acknowledged that there are several inhibiting factors that are in contradiction with this approach, such as limited time and money. Further the paper has highlighted the crucial challenge of how to effectively balance risk and opportunity to invest in long-term opportunities, without risking short-term growth.

  • 55.
    Kianian, Babak
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Larsson, Tobias
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Additive Manufacturing Technology Potential: A Cleaner Manufacturing Alternative2016Inngår i: INTERNATIONAL DESIGN ENGINEERING TECHNICAL CONFERENCES AND COMPUTERS AND INFORMATION IN ENGINEERING CONFERENCE, 2015, VOL 4, AMER SOC MECHANICAL ENGINEERS , 2016, Vol. 4Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper focuses on an emerging manufacturing technology called Additive Manufacturing (AM) and its potential to become a more efficient and cleaner manufacturing alternative. This work is built around selected case companies, where the benefit of AM compared to other more traditional technologies is studied through the comparison of resource consumption. The resource consumption is defined as raw materials and energy input. The scope of this work is the application of AM in the scale model kit industry. The method used is the life cycle inventory study, which is a subtype of life cycle assessment (LCA). The result of the paper is the quantification of raw materials and energy consumption. The outcomes shows that AM has higher efficiency in terms of materials usage, as a higher proportion of materials ending up in the final product. Injection Molding (IM), on the other hand, wastes a significant proportion of raw materials in components that are not part of the final product. If the same or similar raw materials are used in both manufacturing methods, the advantage is clearly with AM. However, AM has higher energy consumption in comparison to the injection molding technique (IM). In terms of energy consumption, AM only has an advantage in this area when working with a very low production volume. The analysis of the energy consumption shows that most of the energy used in AM is to create the final product, while IM only uses a fraction of the total energy to produce the final product. AM technologies are still very new but have the potential for development and reduction of energy consumption in the future. Added to this potential is the higher materials usage efficiency of AM, which reduce the waste of materials and the energy, embedded in them. These two factors are likely to position AM as cleaner manufacturing alternative.

  • 56.
    Kianian, Babak
    et al.
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Larsson, Tobias
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Tavassoli, Mohammad
    Blekinge Tekniska Högskola, Sektionen för management.
    Manufacturing Renaissance: Return of manufacturing to western countries2013Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Manufacturing Renaissance, i.e. return of manufacturing to west, has been recently observed. This paper analyzes the patterns observed within each of the four main drivers behind this new phenomenon and delves more deeply into the driver that centers on the new manufacturing technologies such as Additive Manufacturing (AM) and 3D Printing. Next, this paper will make the case that the location of manufacturing will be in west, relying on the established theory that has been able to explain the location of manufacturing, i.e. Product Life Cycle Model (PLC).

  • 57.
    Kianian, Babak
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Tavassoli, Sam
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för industriell ekonomi.
    Larsson, Tobias C
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    The Role of Additive Manufacturing Technology in job creation: an exploratory case study of suppliers of Additive Manufacturing in Sweden2015Inngår i: Procedia CIRP, Elsevier , 2015, Vol. 26, s. 93-98Konferansepaper (Fagfellevurdert)
    Abstract [en]

    his paper investigates how Additive Manufacturing (AM) technologies, as a process innovation, may contribute to a job creation. Further, the various mechanisms in which AM may contribute to an increase in job creation as well as the types of jobs are analyzed. The analysis also goes beyond AM technologies and incorporates other non-technological factors which foster job creation, i.e. higher wages in BRIC countries, lower quality in BRIC countries, and a rising demand for western-made products. The analysis is based on a case study and the data collected was through interviews with three prominent actors within the AM technologies field in Sweden: technology developers, leading suppliers and users. The main findings indicate that AM (i) contributes to job creation in both the manufacturing sector and in the service sector, (ii) does not bring back mass production jobs from emerging economies such as BRIC, (iii) contributes to job creation in product development stages (e.g. rapid prototyping), and (iv) contributes to job creation in production stages of low-volume batches mainly of complex products. The findings also suggest there are barriers for full exploitation of AM in several areas, including education systems.

  • 58.
    Kianian, Babak
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Tavassoli, Sam
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för industriell ekonomi.
    Larsson, Tobias C.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Diegel, Olaf
    Lund Univ, Fac Engn LTH, Design Sci Dept, Lund, Sweden..
    The Adoption of Additive Manufacturing Technology in Sweden2016Inngår i: 13TH GLOBAL CONFERENCE ON SUSTAINABLE MANUFACTURING - DECOUPLING GROWTH FROM RESOURCE USE, 2016, s. 7-12Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper analyzes the adoption of Additive Manufacturing (AM) technologies in Sweden. The dataset consists of a recent and representative sample of Swedish AM users (companies, universities, and research institutes). The authors investigate two questions. Firstly, what are the current applications of AM in Sweden (e.g. Rapid Prototyping (RP), production)? Secondly, what are the factors that can explain the variation in AM adoption among the users? Using a regression analysis technique, the main findings are as follows. (i) There is a variation among users' choice of AM application, and the majority of users are expanding their AM applications beyond RP. (ii) There are two factors that positively affect the decision of firms to expand classical RP and also incorporate production and management. These two factors are using multiple AM technologies (as opposed to single Fused Deposition Modeling technology) and being small companies. The authors discuss the implication of these results. (C) 2016 Published by Elsevier B.V.

  • 59.
    Kianian, Babak
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Tavassoli, Sam
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för industriell ekonomi.
    Larsson, Tobias
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Diegel, Olaf
    The Adoption of Additive Manufacturing Technology in Sweden2015Inngår i: 3D Printing and Additive Manufacturing, ISSN 2329-7662, Vol. 2, nr 4, s. 152-158Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This article analyzes the adoption of additive manufacturing (AM) technologies in Sweden. The data set consists of a recent and representative sample of Swedish AM users (companies, universities, and research institutes). The authors investigate two questions. First, what are the current applications of AM in Sweden (e.g., rapid prototyping [RP], production)? Second, what are the factors that can explain the variation in AM adoption among the users? Using a regression analysis technique, the main findings are as follows. (i) There is a variation among users' choice of AM application, and the majority of users are expanding their AM applications beyond RP. (ii) There are two factors that positively affect the decision of firms to expand classical RP and incorporate production and management as well. These two factors are using multiple AM technologies (as opposed to single fused deposition modeling technology) being small companies. The authors discuss the implication of these results.

  • 60.
    Larsson, Andreas
    et al.
    Luleå Technical University.
    Ericson, Åsa
    Larsson, Tobias
    Luleå Technical University.
    Isaksson, Ola
    Bertoni, Marco
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Engineering 2.0 - Exploring lightweight technologies for the virtual enterprise2010Inngår i: From CSCW to Web 2.0: European Developments in Collaborative Design, Springer , 2010, s. 173-191Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    In a traditional business partnership, the partner companies are under contractual obligation to share data, information, and knowledge through one or several information systems that the leading firm decides. In such a case, the issue of sharing "whatever needs to be shared" is settled in contracts before any action is taken, however, also giving the implications that sharing expertise becomes a heavy and time-consuming activity. In turn, it can be argued that the heavy administration affects the lead time of product development negatively since the necessary input flows are delayed. In addition, the adaptation to certain predefined collaborative information systems is both expensive and resource-consuming (e.g., educating staff to use them). Also, the system might not be adaptable to the existing internal technology structure, causing a "translation" procedure, again taking up resources. Another structure for collaboration is a network or alliance of independent partner companies. One motivation for a network structure is that the partners can join or leave it more easily. A reason for joining and staying is an implicit sense of knowledge sharing (Tomkins 2001) and access to a "win-win" environment. Furthermore, the partners can be linked by information technology, i.e., forming a virtual ­structure rather than a physical one. The technologies provide the channels with additional knowledge. In a best-case scenario, a company would get access to a wide range of useful competences, and in a worst-case scenario the company would be drained of its core competences. Accordingly, at least two considerations for joining a partner network can be considered. First, the resources needed to couple the technologies have to be reasonable, due to the underpinning logic of going in and out of more than one network. Second, the company has to identify its knowledge base and evaluate the prospective gains and losses of sharing its expertise.

  • 61.
    Larsson, Andreas
    et al.
    Luleå Technical University.
    Ericson, Åsa
    Larsson, Tobias
    Luleå Technical University.
    Randall, Dave
    Engineering 2.0 - Exploring Lightweight Technologies for the Virtual Enterprise2008Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In a Virtual Enterprise setting, it becomes increasingly important to make sure that knowledge and expertise created in one discipline, domain or company is correctly understood and quickly utilized by other actors throughout the value chain. This paper discusses why lightweight technology seems like a particularly promising concept in this context, and why Virtual Enterprises could benefit from learning more about tag clouds, mashups, wikis, and other ‘lightweight' technologies, as complements to the large-scale, arguably ‘heavyweight', product life-cycle management (PLM) systems of current practice. The paper draws on data from a number of product development projects - ranging from the development of manufacturing tools and industrial drive systems, to aircraft engines and armored terrain vehicles. The paper identifies both the kinds of problem typically experienced in the Virtual Enterprise, in relation to knowledge sharing, and explores ways in which lightweight technology might be adapted to solve them.

  • 62.
    Larsson, Andreas
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Larsson, Tobias
    Luleå University of Technology.
    Bylund, Nicklas
    Isaksson, Ola
    Rethinking virtual teams for streamlined development2007Inngår i: Higher creativity for virtual teams - Developing Platforms for Co-Creation, Hershey, PA: Information Science Reference , 2007, s. 138-156Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    Drawing from experiences in automotive and aerospace development, the authors argue that it is time to radically progress our current understanding of how creativity could be introduced in organizations where factors like legal demands and contractual agreements severely restrict ‘outside-the-box' thinking, and where well-known creativity enablers such as trust, shared goals, and shared culture are becoming increasingly difficult to accomplish. <br/>

  • 63.
    Larsson, Andreas
    et al.
    Luleå University of Technology.
    Larsson, Tobias
    Luleå University of Technology.
    Leifer, Larry
    Stanford University.
    Van der Loos, Machiel
    Stanford University.
    Feland, John
    Design for Wellbeing2005Konferansepaper (Fagfellevurdert)
    Abstract [en]

    There is a growing need for engineering designers to engage in creative activities that result in innovative products and technologies for the benefit of society. However, from an engineering perspective, issues of ‘life quality’ are currently heavily under-prioritized, particularly with regard to people with disabilities. This paper argues that both needs and solutions are now part of the designer’s responsibility, and that it is crucial to make a qualitative assessment of both the potential market impact and the ‘quality of life’ improvements afforded by innovations. Design for Wellbeing offers a perspective on life quality that goes beyond the traditional scope of assistive technology in that it aims to help people make a transformation from an actual state of being to a desired state of being – regardless of ability level.

  • 64.
    Larsson, Andreas
    et al.
    Luleå University of Technology.
    Larsson, Tobias
    Luleå University of Technology.
    Törlind, Peter
    Intranet - Luleå University of Technology2001Rapport (Fagfellevurdert)
    Abstract [en]

    The Division of Computer Aided Design has been announced as one of ten winners in the Intranet Design Annual, published by web guru Jakob Nielsen at Nielsen/Norman Group. In competition with over 50 nominated organizations, the division's Intranet, developed by Andreas Larsson, Tobias Larsson and Peter Törlind, reached the top ten. Nielsen has been called the "guru of webpage usability" by the New York Times, and he currently holds 60 U.S. Patents, most of them concerning web usability. The report states: “It is also notable that Luleå University of Technology made it to the top 10, despite being designed by a bunch of graduate students. Though small and lacking a lot of resources, this design team focused relentlessly on user needs and on simplifying their design through many fast iterations. Some of the Luleå features underwent up to 50 iterations before they reached their current usability level. ‘I thought my initial design for the calendar application was really easy to use - in fact, I was quite proud of it,’ says one of the developers. But, the design didn’t hold up when professors and other staff members used it, so it was changed. User needs triumphed over the designer’s initial pride. That’s the hallmark of a truly great designer. On a small budget, the way to achieve high-quality design is through fast, cheap iterations and a willingness to do what users need.”

  • 65.
    Larsson, Andreas
    et al.
    Luleå University of Technology.
    Larsson, Tobias
    Luleå University of Technology.
    Törlind, Peter
    The Mobile intranet - Managing People and Information in a Distributed Organization2002Konferansepaper (Fagfellevurdert)
    Abstract [en]

    As a result of the increasing globalisation of organizations, information systems must deal with issues of mobility. Longer distances between the members can lead to a knowledge gap, which means that two groups of people working in the same organization work according to completely different bases of information. Thus, there is a need for the members of an organization to communicate efficiently across geographical and departmental boundaries. The paper discusses motives, methods and experiences from the participatory design of a versatile Intranet application currently in use at the Division of Computer Aided Design, Luleå University of Technology in Sweden.

  • 66.
    Larsson, Andreas
    et al.
    Luleå University of Technology.
    Törlind, Peter
    Karlsson, Lennart
    Mabogunje, Ade
    Leifer, Larry
    Larsson, Tobias
    Luleå University of Technology.
    Elfström, Bengt-Olof
    Distributed team innovation - a framework for distributed product development2003Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In response to the need for increased effectivity in global product development, the Polhem Laboratory at Luleå University of Technology, Sweden, and the Center for Design Research at Stanford University, USA, have created the concept of Distributed Team Innovation (DTI). The overall aim of the DTI framework is to decrease the negative impact of geographic distance on product development efforts and to further enhance current advantages of worldwide, multidisciplinary collaboration. The DTI framework uses a three-layered approach to the advancement of global collaboration; with product development, education, and research in dynamic and synergetic interaction. From our preliminary findings, we believe that the approach we have taken in the DTI initiative will make significant contributions to meet current challenges of distributed product development.

  • 67.
    Larsson, Tobias
    Luleå University of Technology.
    Effective development of dynamic systems - a structured approach1999Licentiatavhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    This licentiate thesis deals with effective simulation of multibody dynamic systems in the product development process. Previous work to make simulation more effective has concentrated on developing faster calculation methods. Instead, this approach is to make the process of multibody dynamics simulation more effective by structuring of products, simulation models and their usage. Efforts have been made to clarify how computer tools are used in product development in industry today. Insight into the two domains of product development and multibody dynamics is given. These domains have traditionally been separated but the introduction of concurrent engineering and faster computers puts new demands on the integration of computer support and analysis in the development process. A proposal for performing the multibody dynamics methodology in a modular way in the product development process is given based on the performed work.

  • 68.
    Larsson, Tobias
    Luleå University of Technology.
    Multibody dynamic simulation in product development2001Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    This thesis deals with multibody dynamic simulation of mechanical systems in the product development process. The approach is to make the process of multibody dynamics simulation more efficient by structuring of the simulation, simulation models and their usage. Previous work has concentrated on developing faster calculation methods and more specialised simulation software. Efforts have been made to clarify how computer tools and multibody dynamic analysis methods are used in product development in industry today. Insight into the knowledge domains of product development and multibody dynamics is given together with an introduction to the area of distributed simulation, modularisation techniques and nonlinear analysis. The mentioned domains have traditionally been separated but the introduction of concurrent engineering and faster computers puts new demands on the need for integration of computer support and analysis in the development process. The performed work is to be seen as cross-functional work in order to bring different domains together for the sake of a better total product development. The applications areas used in the work are all within vehicle system dynamics. A proposal for performing the multibody dynamics methodology in a distributed and modular way in the product development process is given based on the performed work together with a prototype implementation.

  • 69.
    Larsson, Tobias
    Luleå University of Technology.
    Simulering av dynamiska system vid produktutveckling2001Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Efforts have been made to clarify how computer tools and multibody dynamic analysis methods are used in product development in industry today. Insight into the knowledge domains of product development and multibody dynamics is given together with an introduction to the areas of distributed simulation, modularisation techniques and non-linear analysis. The mentioned domains have traditionally been separated but the introduction of concurrent engineering and faster computers puts new demands on the need for integration of computer support and analysis in the development process. The performed work is to be seen as cross-functional work in order to bring different domains together for the sake of a better total product development. The application areas used in the work are all within vehicle system dynamics. Clarification of the multibody dynamic simulation methodology has been made in the performed work. A proposal for performing the multibody dynamics methodology in a distributed and modular way in the product development process is given together with a prototype implementation. The prototype system facilitates the idea of distributing analysis possibilities from simulation experts to engineers, hereby increasing the simulation usage in product development. The purpose is to arrive at a simulation driven design rather than a simulation verified design

  • 70.
    Larsson, Tobias
    et al.
    Luleå University of Technology.
    Drugge, Lars
    Royal Institute of Technology.
    Dynamic behaviour of pantographs due to different wear situations1998Inngår i: Computers in railways, VI : [Sixth International Conference on Computer Aided Design, Manufacture and Operation on the Railway and Other Advanced Mass Transit Systems, Lisbon, Portugal, 2 - 4 September 1998, 1998Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The overhead power system supplying electricity to a train consists of the pantograph current collector and the overhead line equipment. Many of the parameters describing the dynamic characteristics of the pantograph vary during the lifetime due to wear, mounting conditions, weather etc. When evaluating the dynamic performance of the pantograph it is important to consider a realistic range of variation in key parameters. To study this problem a three-dimensional pantograph model has been developed. It is based on the Schunk WBL88/X2 pantograph used for the Swedish high-speed train X2. The performance of the model of the overhead power system is analysed using a multibody dynamics program. In this work, the influence on the dynamic behaviour of the pantograph, due to changes of key parameters in the head suspension, is investigated using numerical simulations and the methodology of factorial design. The ranges of variation in parameter values are determined from measurements on pantographs subjected to different wear situations.

  • 71.
    Larsson, Tobias
    et al.
    Luleå University of Technology.
    Ericson, Åsa
    Needs as a foundation for life-cycle commitments2007Konferansepaper (Fagfellevurdert)
  • 72.
    Larsson, Tobias
    et al.
    Luleå University of Technology.
    Isaksson, Ola
    Knowledge engineering for functional product innovation2007Konferansepaper (Fagfellevurdert)
  • 73.
    Larsson, Tobias
    et al.
    Luleå University of Technology.
    Larsson, Andreas
    Luleå University of Technology.
    Design for wellbeing2008Inngår i: The Engineering Handbook of Smart Technology for Aging, Disability and Independence, Hoboken, N.J: Wiley , 2008, s. 819-832Kapittel i bok, del av antologi (Fagfellevurdert)
  • 74.
    Larsson, Tobias
    et al.
    Luleå University of Technology.
    Larsson, Andreas
    Luleå University of Technology.
    Web-based multibody dynamics using distributed simulation modules2002Konferansepaper (Fagfellevurdert)
    Abstract [en]

    From being a specialized tool, used in only a few of the design stages, modeling and simulation has become a strategically and competitive tool the global manufacturing firm can’t do without in order to perform world class product development. Simulations have grown from being small isolated models treated at one geographic place to be multidisciplinary and incorporating whole product structures. This means that information, i.e. simulation models, might be located at departments across the entire organization, hence in the global organization across the world and the efforts to perform simulations will be complicated. A method, or tool, that use the Internet for sharing and incorporating modular Simulation models, within the framework of multibody dynamics, is proposed and developed in this work.

  • 75.
    Larsson, Tobias
    et al.
    Luleå University of Technology.
    Larsson, Andreas
    Luleå University of Technology.
    Karlsson, Lennart
    A modular approach to web based multibody dynamic simulation2001Inngår i: / [ed] T. Kjellberg, Stockholm: Kungl. Tekniska Högskolan , 2001Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Computer-based tools for modelling and simulation have changed the best practise of product development. Simulation of mechanical dynamic systems have a large potential in product development but are only partly used today due to, for example, modelling complexity. A method, or tool, that supports distribution of multibody dynamic analysis models, in a modular way, is proposed and developed. Ethnographic methods have been used as a means for gaining an understanding of the engineering analysis work practice. The tool incorporates the engineering simulation packages ADAMS and MATLAB in a web based environment, and allows distributed multibody dynamic simulation in product development.

  • 76.
    Larsson, Tobias
    et al.
    Luleå University of Technology.
    Larsson, Andreas
    Luleå University of Technology.
    Karlsson, Lennart
    Distributed multibody dynamic analysis within product development2001Inngår i: Proceedings of the ASME 2001 Design Engineering Technical Conferences and Computers and Information in Engineering Conference DETC'01, Pittsburgh, Pennsylvania, USA, 2001, s. 501-507Konferansepaper (Fagfellevurdert)
    Abstract [en]

    A method that supports distribution of multibody dynamic analysis is proposed and developed. Ethnographic methods are used as a means for gaining a deeper understanding of the engineering analysis work practice, and the findings form the base for a cooperative design of the system. The concept of design rationale is applied in order to deal with current problems of engineering analysis, such as irrelevant input and output, as well as satisfying the need for useful, real-time feedback. The web based simulation environment, applied to vehicle system dynamics, contains the simulation packages ADAMS and MATLAB and incorporates database technology. The possibility to distribute simulation models and results, from simulation experts to design experts and engineers, as well as subcontractors, is created. The proposed method requires changes in the existing multibody dynamic simulation methodology regarding aspects of incorporation in product development theories

  • 77.
    Larsson, Tobias
    et al.
    Luleå University of Technology.
    Larsson, Andreas
    Luleå University of Technology.
    Kassfeldt, Elisabet
    Innovations for Life - Design for Wellbeing2005Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Design for Wellbeing (DfW) will enable persons with disabilities to influence their everyday living conditions through active participation in the design of the assistive devices they use in their daily lives. One objective is to enhance the wellbeing of persons with disabilities by using their descriptions of needs in relation to assistive devices as a starting point for product development. We aim to give users an active role in developing their own assistive devices by allowing people from various disciplines to work with them in a product development team, to improve the wellbeing of persons with disabilities, and to develop product development methodology with respect to a more empowered user role in product innovation processes. This paper reports on the fundamental concept of DfW, but also on two nine-month student projects, CRE[ATIVO]2 and INTELiCare, that have been carried out as joint efforts between Luleå University of Technology, the Royal Institute of Technology and Stanford University.

  • 78.
    Larsson, Tobias
    et al.
    Luleå University of Technology.
    Larsson, Madelene
    NeedInn - behovsdriven produktutveckling inom E-hälsa2007Rapport (Fagfellevurdert)
    Abstract [en]

    Denna rapport beskriver genomförandet och resultatet av EU-projektet NeedInn. NeedInn står för Needfinding och Innovation och det är inom dessa områden som projektet har tagit fram NeedInn-processen, ett arbetssätt med tillhörande metoder för hur du genomför behovsdriven produktutveckling inom e-hälsa. I rapporten framgår även problematiken som kan uppstå när behoven bakom olika lösningar inte tillgodoses på ett för användaren fungerande sätt och att det behövs en process för att fånga upp dessa behov redan från början så att fokus blir på rätt lösning. Rapporten består av Inledning, och sedan beskrivning av projektets Syfte och Mål. Därefter följer det ett kapitel om hur projektets organisation har varit under projektets gång. Där framgår det även vilka aktiviteter som projektet haft som utgångspunkt samt vilken tidsplan vi arbetat efter. Under kapitlet Fallstudierna redogörs det för samarbetet med de olika vårdaktörerna och varför det är viktigt med förankring innan ett sådant här projekt kan ta fart och få genomslagskraft. Det framgår även hur vi har gått tillväga för att sprida kunskap om projektet och hur vi arbetat med studentprojektet inom ramen för SIRIUS som är en avslutningskurs på LTU inom Kreativ produktutveckling. Vidare har vi under rubriken Samverkan samlat allt material om hur vi samarbetat med andra projekt, forskare, företag och relevanta verksamheter. Där framgår det även vilka konferenser och utbildningar vi deltagit på och hållit i och vad detta har gett projektet. I kapitlet Projektresultat redogör denna rapport för de olika prototypprojekt som genomförts i projektet och där framgår det även vilket tillvägagångssätt och val av metoder som vi använt oss av. Förutom prototypprojekten så har vi under detta kapitel även redogjort för de olika publikationer som är kopplade till projektet och där finns forskningsartiklar, bokkapitel och examensrapport sammanfattade. Arbetet med NeedInn-processen och dess tillhörande IT-stöd är något som också framgår under denna del. Slutligen avrundas denna rapport med en avslutande Diskussion där våra egna reflektioner och tankar kring projektet och dess resultat finns dokumenterade. <br/>

  • 79. Leifer, Larry
    et al.
    Larsson, Andreas
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Larsson, Tobias
    Luleå University of Technology.
    Van der Loos, Machiel
    Feland, John
    Design for wellbeing - innovations for people2005Inngår i: Human Centered Design, Maruzen for 10th anniversary of the Kanto Branch, Japanese Society of Mechanical Engineers , 2005Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    There is a growing need for engineering designers to engage in creative activities that result in innovative products and technologies for the benefit of society. However, from an engineering perspective, issues of ‘life quality’ are currently heavily under-prioritized, particularly with regard to people with disabilities. This paper argues that both needs and solutions are now part of the designer’s responsibility, and that it is crucial to make a qualitative assessment of both the potential market impact and the ‘quality of life’ improvements afforded by innovations. Design for Wellbeing offers a perspective on life quality that goes beyond the traditional scope of assistive technology in that it aims to help people make a transformation from an actual state of being to a desired state of being – regardless of ability level.

  • 80. Löfstrand, Magnus
    et al.
    Larsson, Tobias
    Luleå University of Technology.
    Karlsson, Lennart
    An activity based simulation approach to functional product development2006Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper discusses the new demands that are placed on tools and methods used in industrial product development due to the transformation of industrial companies from hardware producers to function providers, including some effects on collaborative engineering. Traditionally, manufacturing industry focuses on providing excellent goods, i.e. hardware. Services occur on an aftermarket, as an add-on to the developed hardware. By supplying functions, companies can gain control of the aftermarket. The responsibility and availability of the functions provided by hardware remains with the function provider as well as the responsibility for maintenance and spare parts. This approach, a new business mode, is a response to a necessity for business-to-business collaboration to gain economy––of-scale partnerships in the extended enterprise and ultimately to be able to develop competitive offers [1] [2]. Hence, the shift in view is a move towards providing functions, taking a lifecycle commitment for the hardware as well as optimizing the availability of its function in the customers’’ system. The redirection from hardware development to a process where development of functions is in focus is hereafter referred to as Functional Product Development.

  • 81. Löfstrand, Magnus
    et al.
    Larsson, Tobias
    Luleå University of Technology.
    Karlsson, Lennart
    Demands on engineering design culture for implementing functional products2005Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Industrial product development focused companies, such as car manufacturers, have traditionally developed and sold hardware products. In professional business-to-business relations, the integration of hardware and software with services has been identified as a shift in focus in the seller-buyer relationship from hardware development to function development and the way a sustainable economic performance could be achieved. Therefore, the common perception today of where the product is mainly hardware only, needs to be expanded to include a definition where it does not even have to have any hardware at all. Expanding the product definition therefore places additional demands on the design and development of hardware, software and services that may all be part of the functional product. Further, this article discusses how customer requirements need to be handled when developing a total offer in the form of a functional product. Finally, the traits needed in the engineer who is to develop it while being part of a multi-cultural team are discussed, possibly a geographically distributed team.

  • 82.
    Motamediyan Dehkordi, Farnaz
    et al.
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Thompson, Anthony
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för strategisk hållbar utveckling.
    Larsson, Tobias
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Impacts of project-overload on innovation inside organizations: Agent-based modeling2012Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Market competition and a desire to gain advantages on globalized market, drives companies towards innovation efforts. Project overload is an unpleasant phenomenon, which is happening for employees inside those organizations trying to make the most efficient use of their resources to be innovative. But what are the impacts of project overload on organization’s innovation capabilities? Advanced engineering teams (AE) inside a major heavy equipment manufacturer are suffering from project overload in their quest for innovation. In this paper, Agent-based modeling (ABM) is used to examine the current reality of the company context, and of the AE team, where the opportunities and challenges for reducing the risk of project overload and moving towards innovation were identified. Project overload is more likely to stifle innovation and creativity inside teams. On the other hand, motivation on proper challenging goals are more likely to help individual to alleviate the negative aspects of low level of project overload

  • 83. Nergård, Henrik
    et al.
    Ericson, Åsa
    Bergström, Mattias
    Sandberg, Stefan
    Larsson, Tobias
    Luleå University of Technology.
    Törlind, Peter
    Functional product development - discussing knowledge enabling technologies2006Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The purpose in this paper is to discuss new demands on computer tools to support decisions in functional product development. To do that, a tentative picture of changes in product development motivated by the concept of functional products has to be outlined to serve as a basis for the discussions. The concept of functional products affects the business as a whole. The hardware will be offered to customers as one part incorporated in a total offer. The offer as a whole compromise services related to and/or designed into that hardware. Accordingly, the product development level will be affected. But, to meet the expectations the concept of functional products has to affect the design phase of the hardware in particular. Global collaboration in product development puts new demands on knowledge enabling technologies. Computer tools to support decisions in engineering design are commonly used by design teams. Today, these tools are considered to be internal and support engineering specific knowledge. However, the concept of functional products in global design teams insists on collaboration between companies to achieve additional knowledge. Engineering design activities in functional product development need collaboration on a day-to-day basis despite distance.

  • 84. Nergård, Henrik
    et al.
    Johansson, Christian
    Larsson, Tobias
    Luleå Technical University.
    Supporting decision making with agent-based modelling and simulation2008Inngår i: Proceedings of the 10th International Design Conference, Design 2008, University of Zagreb , 2008Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In aeronautics today, manufacturers make extensive use of modelling and simulation capabilities with the purpose to design and evaluate specific engineering tasks and related parameters. The objective with these activities is to further reduce cost, lead-time and increase quality to strive for greater competitiveness, market share and sustainability. In recent years, aeronautics have shown interest in the concept of providing a Total Offer (TO) or selling a Functional Product (FP) [Alonso-Rasgado et al, 2004] (a.k.a. Product Service System (PSS) [Matzen et al, 2005]). The functional product, consisting of both hardware and service components developed simultaneously, provided as a function to the customers, calls for a different approach in the development process, i.e. a Functional Product Development (FPD) process [Nergård et al, 2006]. The main reason for this is the perspective of the product’s life cycle. Instead of components being sold to and owned by the customer, the hardware and service provided as FP implies that ownership and thus the risk remains with the manufacturer throughout the life cycle of the provided function. In order to reduce the risk, and make use of the possibilities for continuous product development and remanufacturing, companies are moving towards making more use of modelling and simulation capabilities not only for the design but also in order to decide whether to offer the product as a FP or as a traditional hardware product. Modelling and simulation methods such as Computer Aided Design (CAD), Finite Element Analysis (FEA), multi-body dynamics (MBS) and Computational Fluid Dynamics (CFD) are relatively mature and extensively used in most product development projects in aeronautics as design and development support tools. As these methods are maturing, they are integrated in support tools for engineers, such as Knowledge Based Engineering (KBE) applications to a larger extent. However, these support tools are still used for the design and verification of specific engineering activities. This perspective supports design on a micro (individual activities) level, while on a macro level, with a holistic perspective of the product development process (PDP), the individual PD-activates can be seen as building blocks of the total system. Although it is possible to use these Knowledge Engineering (KE) applications to model the overall macro-level PD-process there are some issues that makes them less suitable. The level of detail in KE applications is not interesting in a macro-level model where the behaviour and interaction between applications, people, and resources are more interesting. The time each iteration takes has also to be considered, due to the fact that a model that takes hours to simulate is not suitable for use in a macro-level model where the simulation is run over longer model time intervals. Agent-based modelling [Sichman et al, 1998] is an approach where agents (i.e. micro level activities) are utilised to build a system (i.e. process) bottom-up by modelling the behaviour and interaction of the agents in a certain environment. This approach seems to be suitable from a macro level perspective, as information about PD-activities can be included in the agent’s behaviour. The objective of this paper is to discuss agent based modelling and simulation as decision support in functional product development, and to show example of the approach.

  • 85. Nergård, Henrik
    et al.
    Larsson, Tobias
    Luleå University of Technology.
    Challenges for experience feedback in engineering design2010Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In this paper empirical finding from a study conducted at an aerospace company is compared to theory regarding Experience Feedback (EF), Lessons Learned (LL) and Decision Making (DM). The purpose with the study was to examine how EF within the organization was conducted and what problems and possibilities that was seen. A qualitative approach was taken and interviews and a workshop was conducted. The empirical findings show that EF exist on different levels within the organization but current feedback processes are currently leaning more towards archiving and storing than knowledge sharing and learning. Also passive dissemination approaches are mostly used whereas active dissemination within the correct context is needed The aim with this paper is to discuss issues and empirical findings that should be considered when creating work methods and systems that support learning by EF and LL dissemination.

  • 86. Nergård, Henrik
    et al.
    Sandberg, Marcus
    Larsson, Tobias
    Luleå University of Technology.
    Towards life-cycle awareness in decision support tools for engineering design2009Konferansepaper (Fagfellevurdert)
  • 87.
    Nopparat, Nanond
    et al.
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Kianian, Babak
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Thompson, Anthony
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för strategisk hållbar utveckling.
    Larsson, Tobias
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Resource Consumption in Additive Manufacturing with a PSS Approach2012Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Since the 1980’s, additive manufacturing (AM) has gradually advanced from rapid prototyping applications towards fabricating end consumer products. Many small companies may prefer accessing AM technologies through service providers offering production services as result-oriented Industrial Product-Service System (IPSS) rather than investing in their own production line. This study investigated potential benefits of IPSS using system dynamics modeling to study resource demands between two situations: one where an IPSS approach is used and one that is the traditional ownership of production equipment. This study concluded that AM service providers with demand-varying customers could increase service performance and maximize use of production equipment.

  • 88.
    Nurhadi, Lisiana
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för strategisk hållbar utveckling.
    Borén, Sven
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för strategisk hållbar utveckling.
    Ny, Henrik
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för strategisk hållbar utveckling.
    Larsson, Tobias
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Competitiveness and Sustainability Effects of Cars and their Business Models in Swedish Small Town Regions2017Inngår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 140, nr Part 1, s. 333-348Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This article aims to develop and test a new approach for comparing sustainability effects (mainly approximated through CO2 emissions) and the total cost of ownership of various business models (Regular Purchasing, Car Pooling, Car Leasing, and Taxiing) applied to private cars with different energy carriers (Biogas, Ethanol, Gasoline, Plug-in Hybrid, and Electric). The results indicate that, out of all of the vehicles, electric vehicles are the most competitive—from both an ecological and economic perspective. Moreover, of all of the business models, Car Pooling is the most competitive when driving short to medium distances, reducing CO2 emissions by 20-40% compared with Regular Purchasing. Meanwhile, Car Leasing emits the same amount of CO2 emissions as Regular Purchasing if both are driven the same number of kilometers per year. The results also indicate that, from a cost effectiveness perspective, people who travel less than 2000 km per year should primarily consider using Taxis or similar services, while Car Pooling is most cost effective for those who travel from 2000 to 8500 km. For those who travel between 8500 and 13500 km per year, Car Leasing is the most cost effective, and Regular Purchasing is the best option above 13500 km per year. If most car owners were to accept and adapt to this identified need for a market move towards Car Pooling with Electric Vehicles, necessary transportation could be ensured while significantly reducing the number of cars on the road, whether from Regular Purchasing or Car Leasing, as well as those that run on fossil fuel. This, in turn, would result in less fossil fuel use, fewer emissions, and decreased negative effects on human health.

  • 89.
    Ny, Henrik
    et al.
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Thompson, Anthony
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Lindahl, Pia
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Broman, Göran
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Isaksson, Ola
    Carlson, Raul
    Larsson, Tobias
    Luleå University of Technology.
    Robèrt, Karl-Henrik
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Introducing strategic decision support systems for sustainable product-service development across value chains2008Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Most companies do not have a coherent and systematic approach for incorporating sustainability criteria into their decision support systems. Given this, what would such a <em>strategic </em>decision support system (SDSS) look like that that is coherent throughout a development process and systematically incorporates (1) a full sustainability perspective, including (2) a broader approach to meeting needs by product-service systems, and (3) interfaces toward both specific groups of decision makers and specialized in-depth tools? We anticipate such an SDSS being structured by a framework for strategic sustainable development that provides a principle-based definition of sustainability and a systematic method to identify problems and solutions by backcasting from that definition. This should aid identification of potential benefits and challenges of shifting from a product-only focus to a focus on product-service systems. Additionally, the new sustainability and product-service system decision support should be flexible enough to be incorporated into existing decision-making processes. It will likely be formed around a built-in product development process at the companies.

  • 90. Nybacka, Mikael
    et al.
    Ericson, Åsa
    Larsson, Tobias
    Division of Functional Product Development, Luleå University of Technology, .
    Prospective service innovation in automotive testing - beyond distributed technology2010Inngår i: International Journal of Technology Intelligence and Planning (IJTIP), ISSN 1740-2832, E-ISSN 1740-2840, Vol. 6, nr 1, s. 14-31Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In this paper, a Remote Technology Management (RTM) solution is presented for the purpose to elaborate on how it can bring about opportunities for new innovative services in the automotive winter testing industry. The idea is to visualize how service providers can go from a product focus to a future where they take an active role as an expertise in the testing activities. Based on the premise that technologies like RTM can become a basis for novel services, the activities at a proving ground are described from three actors’ point of view and discussed in terms of service innovation.

  • 91. Nybacka, Mikael
    et al.
    Larsson, Tobias
    Luleå University of Technology.
    Distribuerad simulering och visualisering av fordonsdynamik i realtid2007Inngår i: Svenska Mekanikdagar 2007, Luleå, Sweden: Luleå tekniska universitet , 2007Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Kvalitet och funktionalitet gällande system i dagens fordon (bilar) beror till stor del på hur fordonsutvecklare och dess underleverantörer samarbetar under processen för fordonets utveckling. Brist på samarbete, och kommunikationssvårigheter, mellan leverantörer, fordonstillverkare, och även inom fordonsutvecklarens egen organisation skapar problem och förseningar, som ofta är kostsamma. Metoder och verktyg behöver utvecklas som stödjer hela utvecklingsprocessen, och samarbetet mellan de olika aktörerna, samtidigt som verktygen måste vara enkla att arbeta med och att implementera för att de ska användas för sitt tänkta syfte.

  • 92. Nybacka, Mikael
    et al.
    Larsson, Tobias
    Luleå University of Technology.
    Ericson, Åsa
    Collaboration in winter vehicle testing - real-­time simulations boosting innovation opportunities2007Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The performance of cars has during recent years become increasingly dependent on complex electronic systems used especially for safety but also comfort, performance and informatics. Automotive winter testing activities in northern Sweden is vital to test and try out those systems. A contradiction to increased performance is that faulty software also causes 30 % of severe malfunctions in the functionality of the car. To deal with these problems, as early in the design process as possible, innovative methods to cope with digital abstraction and the physical world in a unified way seems promising. One useful approach, in automotive winter testing, might be to support the possibilities for real-time vehicle simulations of the car in motion. The closer collaboration in the automotive industry might be an incitement for investing in technologies for knowledge sharing. Besides enhancing the product development process, additional knowledge might support innovations. Today, instead of providing parts similar to their competitors and relying on one or two automakers, successful suppliers focus heavily on innovation and on collaboration with a number of manufacturers on a global market. Due to the possibilities to visualize whole processes, the use of simulations seems to support a' seeing first' approach to innovations. Thus, the purpose of this paper is to describe an as-is scenario and a to-be scenario for automotive winter testing to highlight how the use of real-time simulations facilitates innovative methods

  • 93. Nybacka, Mikael
    et al.
    Larsson, Tobias
    Luleå University of Technology.
    Johansson, Mathias
    Törlind, Peter
    Distributed real-time vehicle validation2006Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Due to the increasing complexity of embedded systems and software in vehicles, the automotive industry faces an increasing need for testing and verification of components and subsystems under realistic conditions. At the same time, development cycles must be shortened for vehicle manufacturers to be competitive on the global market, and an increased amount of testing and verification must thus be performed in less time. However, simply increasing the testing volume can be prohibitively costly, meaning that testing and verification processes must be made more efficient to reduce the need for more prototypes. This paper presents a concept for distributed testing and verification of vehicles in real-time, with the aim of improving testing and verification efficiency. Through a novel combination of software tools for distributed collaborative engineering, real-time simulation, visualization, and black box simulation, the realized system makes it possible for vehicle manufacturers and their subcontractors to work more concurrently and efficiently with testing and validation. An early implementation of a system prototype is described and future development plans for the system are presented. The main software components used to build up the system are ADAMS/Car RealTime, Matlab/Simulink and a Java-based real-time visualization module originally developed for the gaming industry. A main benefit of the concept is that different disciplines involved in the product development process can use the system to enhance the concurrency between them. Control systems and mechanical engineers can view ongoing tests in real-time and change designs, and efficiently re-simulate and influence ongoing tests in a distributed manner. Through advanced visualization of simulation results and measurement data, engineers can get a clearer view of how the system or product behaves, thereby improving the quality of the validation process. The concept for distributed real-time simulation and visualization described in this paper will gather more information during the early stages of product development, and speed up the product development process due to its real- time nature. The fact that engineers can stay at their home office and only follow the test when needed will enhance their efficiency.

  • 94. Nybacka, Mikael
    et al.
    Larsson, Tobias
    Luleå University of Technology.
    Karlsson, T
    Vehicle validation visualization2006Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Increasing complexity of embedded systems in automotive industry calls for more efficient testing and verification processes. This paper presents a visualization application for distributed real-time vehicle validation. Real-time data from vehicles are transmitted via wireless network from the test track to a simulation framework. The processed data from the simulation are distributed to multiple web based visualization clients. The Java™ based client presents data in a rich 3D environment thus enabling non-expert to understand behaviors of complex vehicle systems. The application will contribute to enhanced validation data presentation and the ability to collaborate in a distributed real-time virtual environment.

  • 95. Nyström, Mattias
    et al.
    Larsson, Tobias
    Luleå University of Technology.
    Karlsson, Lennart
    Kokkolaras, Michael
    Papalambros, Panos Y
    Linking analytical target cascading to engineering information systems for simulation-based optimal vehicle design2003Konferansepaper (Fagfellevurdert)
    Abstract [en]

    An environment for simulation-based analysis, design, and product development is presented in this article. Specifically, we integrate the analytical target cascading (ATC) methodology for optimal design with the Active Mediator Object System (AMOS) II information management tool to represent and exchange engineering data in distributed and heterogeneous environments. The ATC process is applied to the design optimization problem of a vehicle model with many design variables. The vehicle model is decomposed into system models, and vehicle design targets are translated to system specifications. The ADAMS software is used to develop the necessary simulation models. AMOS II is used to enable the data exchange among the vehicle dynamics simulation software that is distributed on different computers connected by a network.

  • 96. Ola, Isaksson
    et al.
    Tobias, Larsson
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Michael, Kokkolaras
    Marco, Bertoni
    Simulation Driven Design for Product-Service Systems2013Inngår i: The Philosopher's Stone for Sustainability / [ed] Yoshiki, Shimomura; Koji, Kimita, Berlin, Heidelberg: Springer , 2013, s. 465-470Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    Total Offers, Functional Products, and Integrated Product Service Engineering reflect a shift toward service offers from manufacturing industry captured within the term Product-Service Systems (PSS). Manufacturing companies have traditionally focused design and development activities on realizing technical and engineered aspects of physical artifacts, while PSS include deeper understanding of customers’ expectation, needs and perceived value, hence calling for modelling of additional aspects. The change in early design processes and the effects on virtual modelling of product properties are discussed in this paper through aerospace industry examples to clarify ‘parameters of change’, giving suggestions for a simulation driven design (SDD) approach.

  • 97.
    Panarotto, Massimo
    et al.
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Larsson, Tobias
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Towards Value Driven Simulation of Product-Service Systems: A Conceptual Scenario2012Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The paper discussed potentials and existing challenges of considering Value when designing a Product-Service System offering. The main problem has been identified on having new methods and tools that can help designers to consider every design option from a value perspective (possibly based on a longer timespan). Nowadays mainly revenue, costs and technical risks analysis are taken into consideration and boiled down into monetary terms in a rather short period. This often caused the “killing” of more radical ideas (that could potentially bring more benefits if seen in a longer time perspective) at the various decision gates during the project. So at the end, everybody talks about value, but actually money is what people look at in the end. The paper discussed how a Value simulation approach can provide benefits in terms of compared different design solutions from a Value perspective. With such an approach it is possible to take into consideration the value of aspects like intangibles perceived by the customer (provide the best customer experience as possible) or knowledge gained by the company during the business. An example has been presented in order to discuss how Value simulation can be effectively a strength when dealing with the wider design space that the PSS development implies. Another main benefit is that such a tool will enable engineers to have at least “reasoning” in order to sponsor more radical concepts. Thirdly, the tool can enable optimization and increase innovation, since the team can look at why the model has low value in a certain lever, and starting to brainstorm possible solutions of how to increase it. However, the approach is still in its infancy and future work needs to be done. First of all, the weighting phase is crucial since it will profoundly affect the model. Further research will focus how the design team can place define weights in a qualitative but effective way, in order to take the major benefits from a “lightweight” qualitative approach and the simulation based on mathematical equations. Secondly, work has to address how intangibles and knowledge can affect monetary parameters, such as the price of the offerings or costs (making the intangibles tangible, so to say). This will require further research, but it has been seen as a great opportunity of making a step further in the topic, since the uncovered areas realted intangibles and knowledge are still many.

  • 98.
    Panarotto, Massimo
    et al.
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Larsson, Tobias
    Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
    Larsson, Andreas
    Enhancing supply chain collaboration in automotive industry by value driven simulation2013Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper presents a computer-based approach for conceptual design that aims to enhance collaborative supply chain development in the automotive sector when dealing with product-service development or radical innovations. The focus of the research has been to design a simulation approach that will enable designers and managers to simulate and evaluate the value of different design options for the different stakeholders involved in the development process and to have insights about the implications between business model innovation and the engineered aspects of the solutions early in the conceptual phase. The approach is presented using a case study within the current project, after following a team responsible for the car cockpit. Four possible scenario have been simulated and evaluated using a commercial simulation software. The main advantage of the proposed approach is to enhance the awareness among designers and managers of the value of different design options, and allow them to explore further how business and design aspects profoundly affect each other, in order to support early decision-making in the design process.

  • 99. Parida, Vinit
    et al.
    Johansson, Christian
    Luleå University of Technology.
    Larsson, Tobias
    Luleå University of Technology.
    Implementation of open innovation practices in Swedish manufacturing industry2009Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The notion of open innovation has quickly gained interest of both practitioners and researches. However, there is a lack on studies on this research topic. Thus, the main purpose of the study is to get a deeper understanding of how can large firms can implement open innovation practices. This purpose will be achieved by first, understanding the current innovation process and second, focus on critical aspects such as, partners, capabilities, and role of SMEs which can be important for implementing open innovation practices. The study is based on qualitative data from two companies from Swedish manufacturing industry. The results show that both companies don’t fully practice open innovation approach. Moreover, partnering with customers and universities are highly preferred compared to having suppliers involved in the development process. The ability to absorb external knowledge and gain from inter-firm relationships were vital for effective open innovation practices. Finally, role of SMEs in the open innovation practices large firms was not clearly visible.

  • 100. Parida, Vinit
    et al.
    Larsson, Tobias
    Luleå University of Technology.
    Isaksson, Ola
    Oghazi, Pejvak
    Towards open innovation practices in aerospace industry2011Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Across industrial settings and environmental conditions, innovation is viewed as a source of advancing firms’ competitive position. Recently, a shift has been witnessed from the traditional innovation model, which mainly focused on internal research and development (R&D) towards open innovation. In this study, we have attempted to study if this approach is suitable for the regular, more mature industry by focusing the context of aerospace industry. The study involves a single case company that is a developer and manufacturer of components for both civil and military aero engines as well as for rocket engines. In addition to previous findings we would like to propose three key areas, which need special attention by any company aiming to successfully realize open innovation. These areas are people, process and technology, put into a framework. The PPT framework was found to be particularly helpful regarding the organizational changes needed for open innovation.

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