各向同性
撞车
各向异性
成形工艺
本构方程
有限元法
材料科学
计算
硬化(计算)
运动学
理想(伦理)
机械
结构工程
计算机科学
工程类
复合材料
物理
算法
经典力学
法学
图层(电子)
程序设计语言
量子力学
政治学
作者
Hansun Ryou,Kwansoo Chung,Jeong Whan Yoon,Cheol E. Han,Jae Ryoun Youn,Tae Jin Kang
出处
期刊:Journal of Manufacturing Science and Engineering-transactions of The Asme
[ASME International]
日期:2005-02-01
卷期号:127 (1): 182-192
被引量:19
摘要
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.
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