| 钢构件考虑损伤的有限元分析 |
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| 引用本文： | 郑宏,俞茂宏. 钢构件考虑损伤的有限元分析[J]. 兰州理工大学学报, 2003, 29(1): 104-108 |
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| 作者姓名： | 郑宏 俞茂宏 |
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| 作者单位： | 1. 西安交通大学,力学博士后流动站,陕西,西安,710049;长安大学,建筑工程学院,陕西,西安,710061
2. 西安交通大学,力学博士后流动站,陕西,西安,710049 |
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| 基金项目： | 中国博士后科学基金 (中博基 [2 0 0 1] 14号 )，2 0 0 2年国家外国专家局项目 |
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| 摘 要： | 提出了结构钢弹塑性各向异性损伤本构模型 ,该模型采用混合强化准则 ,考虑Bauschinger效应、屈服平台、硬化 (软化 )效应及损伤和损伤演化影响 ,客观地反映了结构钢在循环荷载作用下的工作性能 ;采用U .L .格式的壳体大挠度双重非线性有限元分析方法 ,对箱型组合截面柱进行单轴循环荷载作用下的滞回性能分析 .通过与试验结果对比 ,可为深入进行钢结构地震反应分析奠定基础
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| 关 键 词： | 钢构件 弹塑性各向异性损伤 本构模型 有限元分析 |
| 文章编号： | 1000-5889(2003)01-0104-05 |
| 修稿时间： | 2002-08-20 |
Finite element analyses of steel members based on damage constitutive relations |
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| ZHENG Hong ,,YU Mao hong. Finite element analyses of steel members based on damage constitutive relations[J]. Journal of Lanzhou University of Technology, 2003, 29(1): 104-108 |
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| Authors: | ZHENG Hong YU Mao hong |
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| Affiliation: | ZHENG Hong 1,2,YU Mao hong 1 |
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| Abstract: | A new kind of constitutive model the elastic plastic anisotropic damage model of the constructional steel is put forward, which includes the mixed hardening criterion, Bauschinger effect, yield plateau, hardening (softening) effect, and the influence of damage and damage evolution. The model can reflects the real work ability of consturctional steel under cyclic loads and is suitable for elastic plastic analyses of steel structures during the earthquake. The double nonlinearity FEM of U.L. Mode is adopted to analyse the hysteresis of welded columns under cyclic uniaxial load. Compared with experimental results, it is found that it can provide a basis for the analysis of seismic response of steel structures. |
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| Keywords: | steel structure member elastic plastic anisotropic damage constitutive model FEM analysis |
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