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首页> 外文会议>IUYAM Symposium on Theoretical and Numerical Methods in Continuum Mechanics of Porous Materials, Sep 5-10, 1999, Stuttgart, Germany >Numerical Description of Elastic-Plastic Behavior of Saturated Porous Media
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Numerical Description of Elastic-Plastic Behavior of Saturated Porous Media

机译：饱和多孔介质弹塑性行为的数值描述

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摘要

In this paper, the numerical description of the elasto-plastic behavior of saturated porous materials, consisting of a solid skeleton with liquid filled pores, will be discussed. In particular, frictional materials will be described which show small elastic but mostly plastic deformations. The elastic-plastic deformable solid skeleton and the liquid are assumed to be incompressible, where the liquid does not exhibit viscous properties. The description of the stress state is done within the framework of the geometrically-linear theory, because small deformations are assumed. The elastic strain state shall be expressed by Hooke's law and the plastic strain state with the help of a single surface yield criterion as well as a non-associated flowrule. The numerical description of the initial- and boundary-value problems is done by the finite element method within the framework of the standard Galerkin procedure.
机译：在本文中，将讨论饱和多孔材料的弹塑性行为的数值描述，该材料由具有液体填充孔的固体骨架组成。特别地，将描述摩擦材料，其显示出小的弹性变形但大部分是塑性变形。假定可塑性塑性变形的固体骨架和液体是不可压缩的，其中液体不表现出粘性。应力状态的描述是在几何线性理论的框架内完成的，因为假定变形很小。弹性应变状态应通过胡克定律和塑性应变状态通过单个表面屈服准则以及非关联流动规则来表示。初始值和边值问题的数值描述是在标准Galerkin过程框架内通过有限元方法完成的。

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