Prediction of forming limit diagram of automotive sheet metals using a new necking criterion

Tuan Pham, QuocBlekinge Tekniska Högskola,Institutionen för maskinteknik,PDRL,Blekinge Institute of Technology, Sweden (författare)

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).
A theoretical model for predicting the forming limit diagram of sheet metal, namedMMFC2, 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 andAA6016, which are widely used in making car body parts. Uniaxial tensile and bulge tests areconducted to calibrate constitutive equations for modeling the tested materials. The developedmaterial 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. Theirpredictions are validated by comparing with an experimental one obtained from a series ofNakajima tests. It is found that the derived results of MMFC2 are comparable to that of MK modeland agreed reasonably with experimental data. Less computational time is the major advantage ofMMFC2 against the MK model. (PDF) Prediction of forming limit diagram of automotive sheet metals using a new necking criterion.

Islam, Md. Shafiqul,1984-Blekinge Tekniska Högskola,Institutionen för maskinteknik,PDRL,Blekinge Institute of Technology, Sweden(Swepub:bth)MDM (författare)
Sigvant, MatsBlekinge Tekniska Högskola,Institutionen för maskinteknik,Blekinge Institute of Technology, Sweden;; Volvo Cars, Sweden(Swepub:bth)MXS (författare)
Pérez Caro, Lluís,1985-RISE,Tillverkningsprocesser,Component Manufacturing Unit, Olofström, Sweden(Swepub:ri)lluispe@ri.se (författare)
Blekinge Tekniska HögskolaInstitutionen för maskinteknik (creator_code:org_t)

Ingår i:Materials Research Proceedings: Materials Research Forum LLC, s. 705-7109781644902462

Av författaren/redakt...: Tuan Pham, Quoc; Islam, Md. Shafi ...; Sigvant, Mats; Pérez Caro, Lluí ...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Maskinteknik; och Teknisk mekanik

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