| 混凝土多轴弹塑性损伤本构模型 |
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| 引用本文： | 张衡,魏德敏. 混凝土多轴弹塑性损伤本构模型[J]. 混凝土, 2009, 0(5). DOI: 10.3969/j.issn.1002-3550.2009.05.012 |
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| 作者姓名： | 张衡 魏德敏 |
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| 作者单位： | 1. 华南理工大学土木工程系,广东,广州,510640
2. 华南理工大学土木工程系,广东,广州,510640;华南理工大学亚热带建筑科学国家重点实验室,广东,广州,510640 |
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| 摘 要： | 建立了混凝土的多轴弹塑性损伤本构模型.考虑到混凝土在受拉和受压荷载作用下的不同破坏机理,将应力张量分解成受拉和受压两部分,定义了塑性屈服函数,从而达到考虑混凝土塑性变形的目的.在连续损伤力学理论的框架内定义了相应的损伤变量,并分别给出了损伤准则,以描述材料的不同损伤过程.对混凝土的单/双轴受拉和单/双轴受压四种加载情形进行了数值计算,并与相关的试验对比,结果验证了模型的正确性及有效性.
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| 关 键 词： | 混凝土 损伤力学 损伤准则 本构模型 |
Multi-axial elasto-plastic damage constitutive model for concrete |
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| ZHANG Heng,WEI De-min. Multi-axial elasto-plastic damage constitutive model for concrete[J]. Concrete, 2009, 0(5). DOI: 10.3969/j.issn.1002-3550.2009.05.012 |
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| Authors: | ZHANG Heng WEI De-min |
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| Affiliation: | a.Department of Civil Engineering;b.State Key Laboratory of Subtropical Building Science;South China University of Technology;Guangzhou 510640;China |
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| Abstract: | A multi-axial elasto-plastic damage constitutive model for concrete is developed.The effective stress tensor is decomposed into the tensile and the compressive parts due to the different fail mechanisms of concrete under tension and compression.A plastic yield function is introduced to account for the plastic behaviors of concrete.Within the framework of continuum damage mechanics,the damage variables are defined with damage criteria to characterize the development of damage of concrete in tension and compr... |
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| Keywords: | concrete damage mechanics damage criteria constitutive model |
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