| 微孔洞唯象损伤力学模型及其应用 |
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| 引用本文： | 董杰,李永池,陈学东. 微孔洞唯象损伤力学模型及其应用[J]. 爆炸与冲击, 2008, 28(5): 443-447. DOI: 10.11883/1001-1455(2008)05-0443-05 |
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| 作者姓名： | 董杰 李永池 陈学东 |
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| 作者单位： | 国家压力容器与管道安全工程技术研究中心,安徽,合肥,230031;中国科学技术大学近代力学系,安徽,合肥,230027;中国科学技术大学近代力学系,安徽,合肥,230027;国家压力容器与管道安全工程技术研究中心,安徽,合肥,230031 |
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| 摘 要： | 基于微损伤发展的NAG(nucleation and growth)模型，从唯相角度，得到了一种微孔洞损伤演化方程。在考虑损伤软化和温度软化的基础上得到了材料含损伤本构关系。将损伤演化方程和材料本构关系引入ABAQUS有限元软件对D6AC和921两种钢板撞击层裂问题进行数值模拟。模拟结果与实验结果吻合。
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| 关 键 词： | 固体力学 损伤演化方程 有限元 钢板 唯象 本构 |
A phenomenological damage model of microvoids and its application |
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| DONG Jie,LI Yong-chi,CHEN Xue-dong. A phenomenological damage model of microvoids and its application[J]. Explosion and Shock Waves, 2008, 28(5): 443-447. DOI: 10.11883/1001-1455(2008)05-0443-05 |
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| Authors: | DONG Jie LI Yong-chi CHEN Xue-dong |
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| Affiliation: | 1.National Technology Research Center on Pressure Vessel and Pipe Line Safety Engineering, Hefei 230031, Anhui, China;2.Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, Anhui, China |
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| Abstract: | Based on the nucleation-and-growth model of microvoids and the phenomenological assumption, a microvoid damage evolution equation was acquired. The material constitutive relation considering the effects of damage and temperature softening was developed. The damage evolution and material constitutive equations were embedded into the fininte element software ABAQUS with its material interface to simulate numerically the impact spallations of DA6C and 921 steel plates. The simulated results are in good agreement with the experiments. |
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| Keywords: | solid mechanics damage evolution equation finite element steel plate phenomenological theory constitutive equation |
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