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Issue:
Numerical integration algorithm for the rate-dependent Chaboche model
Author(s):
HU Gui-juan
,
ZHANG Ke-shi
,
HUANG Shi-hong
Pages:
166
-
171
Year:
2011
Issue:
1
Journal:
Journal of Guangxi University(Natural Science Edition)
Keyword:
本构模型
;
积分算法
;
率相关
;
316不锈钢
;
Abstract:
为验证Chaboche率相关本构模型对循环塑性行为的描述能力,研究了有限元计算中本构关系的数值积分过程和Newton-Baphson迭代算法.编写了ABAQUS材料用户子程序UMAT,在此基础上对316不锈钢材料在600℃下的循环特性进行了有限元数值模拟.结果表明:该模型对材料率相关性、对称拉压循环特性及棘轮效应的描述与试验相吻合,验证了模型算法的高效性和计算程序的正确性,证实了模型可以合理描述材...
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