| 基于颗粒组构特性的散体材料本构模型研究 |
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| 引用本文： | 高政国,Hayley H. SHEN.基于颗粒组构特性的散体材料本构模型研究[J].岩土力学,2009,30(Z1):93-98. |
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| 作者姓名： | 高政国 Hayley H. SHEN |
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| 作者单位： | 1. 北京航空航天大学,交通科学与工程学院,北京,100191
2. 美国clarkson大学,土木环境系,美国,13699 |
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| 摘 要： | 通过散体介质材料单元颗粒排列组构表达的细观结构力学关系,建立了用颗粒密集度、颗粒排列组构关系和颗粒间摩擦特性等非连续介质材料特性参数描述的散体介质材料本构模型,从而实现散体介质材料宏观连续介质描述的等效应力表达.通过该模型可采用数值方法进行散体介质材料准静态情况下的力学特性分析.文中最后基于有限元软件ABAQUS,进行了该本构模型的二次开发.数值算例结果验证了所建立散体介质材料本构模型的适用性.
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| 关 键 词： | 散体介质材料 本构模型 颗粒排列组构 |
| 收稿时间： | 2009-06-27 |
A study of constitutive model for granular material based on characters of discrete particles arranged |
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| Hayley H. SHEN.A study of constitutive model for granular material based on characters of discrete particles arranged[J].Rock and Soil Mechanics,2009,30(Z1):93-98. |
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| Authors: | Hayley H SHEN |
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| Institution: | 1. School of Transportation Science and Engineering, Beihang University, Beijing 10091, China; 2. Department of Civil & Environmental Engineering, Clarkson University. NY 13699, USA |
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| Abstract: | A granular material constitutive model considered the particles arranged pattern is developed. A representative unit which consists of several particles is introduced in this model. The relations between stress and strain can be described by the particle concentration, the pattern with particle arranged in unit, and the friction between particles. A Finite element programming work has been done based on the software ABAQUS. A numerical example illustrates that the constitutive model can be applied to numerical analysis of granular material in which the behavior of particles is considered. |
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| Keywords: | granular material constitutive model particles arrangement |
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