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Failure Prediction of Automotive Components Utilizing a Path Independent Forming Limit Criterion
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.ORCID iD: 0000-0001-9889-6746
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.ORCID iD: 0000-0002-7730-506x
AutoForm Development GmbH, CHE.
Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.ORCID iD: 0000-0002-1162-7023
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2022 (English)In: Key Engineering Materials / [ed] Vincze G., Barlat F., Trans Tech Publications Inc., 2022, p. 906-916Conference paper, Published paper (Refereed)
Abstract [en]

An area in the automotive industry that receives a lot of attention today is the introduction of lighter and more advanced material grades in order to reduce carbon emissions, both during production and through reduced fuel consumption. As the complexity of the introduced materials and component geometries increases, so does the need for more complex failure prediction approaches. A proposed path-independent failure criterion, based on a transformation of the limit curve into an alternative evaluation space, is investigated. Initially, the yield criterion used for this transformation of the limit curve was investigated. Here it was determined that the criterion for the transformation could not be decoupled from the material model used for the simulation. Subsequently, the approach using the transformed limit curve was tested on an industrial case from Volvo Cars, but a successful failure prediction was not obtained. © 2022 The Author(s). Published by Trans Tech Publications Ltd, Switzerland.

Place, publisher, year, edition, pages
Trans Tech Publications Inc., 2022. p. 906-916
Series
Key Engineering Materials, ISSN 1013-9826, E-ISSN 1662-9795 ; 926
Keywords [en]
Failure Prediction, Formability, Non-Linear Strain Paths, Path Dependency
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:bth-23828DOI: 10.4028/p-u6g3p6Scopus ID: 2-s2.0-85140469969ISBN: 9783035717594 (print)OAI: oai:DiVA.org:bth-23828DiVA, id: diva2:1708462
Conference
25th International Conference on Material Forming, ESAFORM 2022, Braga, 27 April through 29 April 2022
Part of project
PREDICT- Failure prediction for complex load cases, Knowledge Foundation, Vinnova
Funder
Vinnova, 2020-02986
Note

open access

Available from: 2022-11-04 Created: 2022-11-04 Last updated: 2023-02-22Bibliographically approved
In thesis
1. Failure Prediction of Complex Load Cases in Sheet Metal Forming: Emphasis on Non-Linear Strain Paths, Stretch-Bending and Edge Effects
Open this publication in new window or tab >>Failure Prediction of Complex Load Cases in Sheet Metal Forming: Emphasis on Non-Linear Strain Paths, Stretch-Bending and Edge Effects
2023 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

With the increased focus on reducing carbon emissions in today’s society, several industries have to overcome new challenges, where especially the automotive industry is under a lot of scrutiny to deliver improved and more environmentally friendly products. To meet the demands from customers and optimize vehicles aerodynamically, new cars often contain complex body geometries, together with advanced materials that are introduced to reduce the total vehicle weight. With the introduction of the complex body components and advanced materials,one area in the automotive industry that has to overcome these challenges is manufacturing engineering, and in particular the departments working with the sheet metal forming process. In this process complex body component geometries can lead to non-linear strain paths and stretch bending load cases, and newly introduced advanced materials can be prone to exhibit behaviour of edge cracks not observed in conventional sheet metals. This thesis takes it onset in the challenges seen in industry today with predicting failure of the three complex load cases: Non-Linear Strain Paths, Stretch-Bending,and Edge Cracks. Through Finite Element simulation attempts are made to accurately predict failure caused by aforementioned load cases in industrial components or experimental setups in an effort to develop post-processing methods that are applicable to all cases.

Place, publisher, year, edition, pages
Karlskrona: Blekinge Tekniska Högskola, 2023. p. 125
Series
Blekinge Institute of Technology Licentiate Dissertation Series, ISSN 1650-2140 ; 3
Keywords
Sheet Metal Forming, Failure Prediction, Non-Linear Strain Paths, Stretch-Bending, Edge Effects
National Category
Mechanical Engineering Applied Mechanics
Research subject
Mechanical Engineering
Identifiers
urn:nbn:se:bth-24300 (URN)978-91-7295-451-9 (ISBN)
Presentation
2023-04-06, J1630, Valhallavägen 1, Karlskrona, 10:00 (English)
Opponent
Supervisors
Funder
Vinnova, 2020-02986
Available from: 2023-02-27 Created: 2023-02-22 Last updated: 2023-04-19Bibliographically approved

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fulltext(1047 kB)243 downloads
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928dad19bf282314907dba59980eeac3fdaaba6d4eda8cc0c880a3137d6c8d02b8ed4252b87b5e00396f99338bef5a4b181f393fb84db5015fb81976b5591ebe
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Barlo, AlexanderSigvant, MatsIslam, Md. ShafiqulPilthammar, Johan

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