| 考虑应变非强化区的Ohno本构模型验证分析 |
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| 引用本文： | 杨勇,张克实,李文翔,胡桂娟,蔚夺魁.考虑应变非强化区的Ohno本构模型验证分析[J].广西大学学报(自然科学版),2010,35(1). |
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| 作者姓名： | 杨勇 张克实 李文翔 胡桂娟 蔚夺魁 |
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| 作者单位： | 1. 广西大学土木建筑工程学院,广西,南宁,530004
2. 沈阳航空发动机研究所,辽宁,沈阳,110015 |
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| 基金项目： | 国家自然科学基金资助项目(10662001,90815001);;广西自然科学基金资助项目(桂科自0832024);;广西大学科学基金资助项目 |
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| 摘 要： | 对含有塑性应变非强化区的Ohno循环塑性本构方程关于应力、内变量计算和一致切线刚度矩阵计算的过程进行了分析,在此基础上编写了ABAQUS材料用户子程序UMAT。然后用该程序对316L不锈钢材料的应变对称拉压变幅循环、应变非对称拉压变幅循环、应变对称剪切(扭转)变幅循环和轴向拉压棘轮循环等塑性变形过程进行了数值模拟,所得结果合理地反映了材料相应试验过程中的现象。
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| 关 键 词： | 循环加载 Ohno 本构模型 数值模拟 316L不锈钢 |
Verification of Ohno constitutive model with strain nonhardening region |
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| YANG Yong,ZHANG Ke-shi,LI Wen-xiang,HU Gui-juan,YU Duo-kui.Verification of Ohno constitutive model with strain nonhardening region[J].Journal of Guangxi University(Natural Science Edition),2010,35(1). |
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| Authors: | YANG Yong ZHANG Ke-shi LI Wen-xiang HU Gui-juan YU Duo-kui |
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| Institution: | 1. College of Civil and Architectural Engineering;Guangxi University;Nanning 530004;China;2. Aeroengin Institute of Shenyang;Shenyang 110015;China |
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| Abstract: | In this paper,the algorithm procedure of Ohno constitutive equation with strain nonhard-ening region for computation of stress,internal variable and consistent tangent matrices is analyzed and discussed. A material user subroutine UMAT for ABAQUS software was composed according to the investigation mentioned above. By using this UMAT with ABAQUS software the symmetrical and unsymmetrical tension-compressed unequal amplitude strain cycle,symmetrical sheared unequal amplitude strain cycle and tension-compress... |
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| Keywords: | cyclic loading Ohno constitutive models numerical simulation 316L stainless steel |
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