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Nonlinear finite element analysis based on macro triangular partition shell element
Author(s):
CAO Yang
,
LI Jie
Pages:
139
-
143
Year:
2008
Issue:
2
Journal:
CHINESE JOURNAL OF COMPUTATIONAL MECHANICS
Keyword:
假设自然应变
;
分区平板壳单元
;
用户自定义单元(UEL)
;
用户自定义材料(UMAT)
;
损伤能释放率
;
Abstract:
针对剪切闭锁效应,本文研究了一种基于假设自然应变方法的宏观三角形分区平板壳单元.利用通用有限元软件ABAQUS所提供的用户自定义单元(UEL)和用户自定义材料(UMAT)子程序,本文将宏观三角形分区平板壳单元和基于损伤能释放率的混凝土弹塑性损伤本构模型成功嵌入了ABAQUS的主分析模块.经典试验McNeice双向混凝土板的数值模拟结果表明:宏观三角形分区平板壳单元对于描述板壳结构的非线性损伤行为是行之有效的.
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