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Incorporation of sheet-forming effects in crash simulations using ideal forming theory and hybrid membrane and shell method

Version 2 2024-06-03, 17:05
Version 1 2017-05-17, 13:59
journal contribution
posted on 2024-06-03, 17:05 authored by H Ryou, K Chung, Jeong YoonJeong Yoon, CS Han, JR Youn, TJ Kang
In order to achieve reliable but cost-effective crash simulations of stamped parts, sheet-forming process effects were incorporated in simulations using the ideal forming theory mixed with the three-dimensional hybrid membrane and shell method, while the subsequent crash simulations were carried out using a dynamic explicit finite element code. Example solutions performed for forming and crash simulations of I- and S-shaped rails verified that the proposed approach is cost effective without sacrificing accuracy. The method required a significantly small amount of additional computation time, less than 3% for the specific examples, to incorporate sheet-forming effects into crash simulations. As for the constitutive equation, the combined isotropic-kinematic hardening law and the nonquadratic anisotropic yield stress potential as well as its conjugate strain-rate potential were used to describe the anisotropy of AA6111-T4 aluminum alloy sheets.

History

Journal

Journal of manufacturing science and engineering

Volume

127

Pagination

182-192

Location

New York, N.Y.

ISSN

1087-1357

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2005, ASME

Issue

1

Publisher

American Society of Mechanical Engineers