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Advancements in package opening simulations
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
Tetra Pak, SWE.
2014 (English)In: Procedia Materials Science / [ed] Zhang, Z; Skallerud, B; Thaulow, C; Ostby, E; He, J, Elsevier, 2014, Vol. 3, p. 1441-1446Conference paper, Published paper (Refereed)
Abstract [en]

The fracture mechanical phenomenon occurring during the opening of a beverage package is rather complex to simulate. Reliable and calibrated numerical material models describing thin layers of packaging materials are needed. Selection of appropriate constitutive models for the continuum material models and how to address the progressive damage modeling in various loading scenarios is also of great importance. The inverse modeling technique combined with video recording of the involved deformation mechanisms is utilized for identification of the material parameters. Large deformation, anisotropic non-linear material behavior, adhesion and fracture mechanics are all identified effects that are needed to be included in the virtual opening model. The results presented in this paper shows that it is possible to select material models in conjunction with continuum material damage models, adequately predicting the mechanical behavior of failure in thin laminated packaging materials. Already available techniques and functionalities in the commercial finite element software Abaqus are used. Furthermore, accurate descriptions of the included geometrical features are important. Advancements have therefore also been made within the experimental techniques utilizing a combination of microCT-scan, SEM and photoelasticity enabling extraction of geometries and additional information from ordinary experimental tests and broken specimens. Finally, comparison of the experimental opening and the virtual opening, showed a good correlation with the developed finite element modeling technique.

Place, publisher, year, edition, pages
Elsevier, 2014. Vol. 3, p. 1441-1446
Keywords [en]
Abaqus, adhesion, constitutive model, opening simulation, progressive damage
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:bth-6611DOI: 10.1016/j.mspro.2014.06.233ISI: 000398274600228Local ID: oai:bth.se:forskinfoAB636FE90962BF23C1257D61006CFFF4OAI: oai:DiVA.org:bth-6611DiVA, id: diva2:834129
Conference
0th European Conference on Fracture (ECF), Trondheim
Note

http://www.sciencedirect.com/science/article/pii/S221181281400234X Open access journal

Available from: 2014-10-03 Created: 2014-09-28 Last updated: 2019-03-28Bibliographically approved
In thesis
1. Mechanics and Failure in Thin Material Layers: Towards Realistic Package Opening Simulations
Open this publication in new window or tab >>Mechanics and Failure in Thin Material Layers: Towards Realistic Package Opening Simulations
2019 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The final goal of this PhD-work is an efficient and user-friendly finite element modelling strategy targeting an industrial available package opening application.  In order to reach this goal, different experimental mechanical and fracture mechanical tests were continuously refined to characterize the studied materials. Furthermore, the governing deformation mechanisms and mechanical properties involved in the opening sequence were quantified with full field experimental techniques to extract the intrinsic material response. An identification process to calibrate the material model parameters with inverse modelling analysis is proposed. Constitutive models, based on the experimental results for the two continuum materials, aluminium and polymer materials, and how to address the progressive damage modelling have been concerned in this work. The results and methods considered are general and can be applied in other industries where polymer and metal material are present.                                                                   

This work has shown that it is possible to select constitutive material models in conjunction with continuum material damage models, adequately predicting the mechanical behaviour in thin laminated packaging materials. Finally, with a slight modification of already available techniques and functionalities in a commercial general-purpose finite element software, it was possible to build a simulation model replicating the physical behaviour of an opening device. A comparison of the results between the experimental opening and the virtual opening model showed a good correlation.

The advantage with the developed modelling approach is that it is possible to modify the material composition of the laminate. Individual material layers can be altered, and the mechanical properties, thickness or geometrical shape can be changed. Furthermore, the model is flexible and a new opening design with a different geometry and load case can easily be implemented and changed in the simulation model. Therefore, this type of simulation model is prepared to simulate sustainable materials in packages and will be a useful tool for decision support early in the concept selection in technology and development projects.

Place, publisher, year, edition, pages
Karlskrona: Blekinge Tekniska Högskola, 2019. p. 140
Series
Blekinge Institute of Technology Doctoral Dissertation Series, ISSN 1653-2090 ; 9
Keywords
aluminium foil, FEM, LDPE, localisation, necking, polymer, progressive damage, semi-crystalline, simulation, virtual twin
National Category
Mechanical Engineering
Identifiers
urn:nbn:se:bth-17748 (URN)978-91-7295-374-1 (ISBN)
Public defence
2019-05-29, J1650, BTH, Campus Gräsvik, Karlskrona, 13:30 (English)
Opponent
Supervisors
Available from: 2019-03-28 Created: 2019-03-28 Last updated: 2019-05-09Bibliographically approved

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