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Modeling of aluminum alloy sheets based on new anisotropic yield functions

Version 2 2024-06-03, 17:05
Version 1 2017-05-17, 14:00
journal contribution
posted on 2024-06-03, 17:05 authored by Jeong YoonJeong Yoon, SH Hong
New anisotropic models (Yld2000-2d, Barlat et al. [F. Barlat, J.C. Brem, J.W. Yoon, K. Chung, R.E. Dick, S.H. Choi, F. Pourboghrat, E. Chu, D.J. Lege, Plane stress yield function for aluminum alloy sheets, Int. J. Plastic. 19 (2003) 1297-1319]; Yld2004-18p, Barlat et al. [F. Barlat, H. Aretz, J.W. Yoon, M.E. Karabin, J.C. Brem, R.E. Dick, Linear transformation-based anisotropic yield functions, Int. J. Plastic. 21 (2005) 1009-1039] ) that accurately describe the anisotropic behavior of aluminum alloy sheets were implemented in a finite element code, LS-DYNA User MATerial subroutine (UMAT). The Yld2004-18p especially, requires sufficient experimental input taken every 15° from the rolling direction. As planar anisotropic behavior, earing simulation was carried out in order to show the capability of Yld2004-18p to predict more than four ears. A general automotive panel simulation which covers forming, trimming and springback was performed to show the generality and efficiency of the two new yield functions. The simulation results led to the excellent predictions.

History

Journal

Journal of materials processing technology

Volume

177

Pagination

134-137

Location

Amsterdam, The Netherlands

ISSN

0924-0136

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2006, Elsevier B.V.

Issue

1-3

Publisher

Elsevier