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Prediction of forming limit diagram of automotive sheet metals using a new necking criterion
Blekinge Institute of Technology, Sweden.
Blekinge Institute of Technology, Sweden.
Blekinge Institute of Technology, Sweden;; Volvo Cars, Sweden.
RISE Research Institutes of Sweden, Materials and Production, Manufacturing Processes.ORCID iD: 0000-0002-1432-444X
2023 (English)In: Materials Research Proceedings, Association of American Publishers , 2023, p. 705-710Conference paper, Published paper (Refereed)
Abstract [en]

A theoretical model for predicting the forming limit diagram of sheet metal, named MMFC2, was recently proposed by the authors based on the modified maximum force criterion (MMFC). This study examines the application of MMFC2 for two automotive sheets, DP800 and AA6016, which are widely used in making car body parts. Uniaxial tensile and bulge tests are conducted to calibrate constitutive equations for modeling the tested materials. The developed material models are employed into different frameworks such as MMFC, MMFC2, and Marciniak-Kuczynski (MK) models to forecast the forming limit curve (FLC) of the tested materials. Their predictions are validated by comparing with an experimental one obtained from a series of Nakajima tests. It is found that the derived results of MMFC2 are comparable to that of MK model and agreed reasonably with experimental data. Less computational time is the major advantage of MMFC2 against the MK model. 

Place, publisher, year, edition, pages
Association of American Publishers , 2023. p. 705-710
Keywords [en]
AA6016, DP800, Forming Limit Diagram, MK Method, MMFC2
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:ri:diva-65425DOI: 10.21741/9781644902479-76Scopus ID: 2-s2.0-85160273454ISBN: 9781644902462 (print)OAI: oai:DiVA.org:ri-65425DiVA, id: diva2:1766477
Conference
26th International ESAFORM Conference on Material Forming, ESAFORM 2023, 19 April 2023 through 21 April 2023
Note

Funding details: Fellowships Fund Incorporated, FFI, 2020-02986; Funding details: VINNOVA; Funding details: Stiftelsen för Kunskaps- och Kompetensutveckling, KKS, 20200125; Funding text 1: The authors gratefully acknowledge the financial support from KK-stiftelsen (grant number 20200125) and VINNOVA in the Sustainable Production subprogram within Vehicle Strategic Research and Innovation (FFI) program (grant number 2020-02986).

Available from: 2023-06-13 Created: 2023-06-13 Last updated: 2023-06-13Bibliographically approved

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Pérez Caro, Lluís

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