| 非饱和多孔介质非线性有限元分析的一致性算法 |
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| 引用本文： | 张洪武.非饱和多孔介质非线性有限元分析的一致性算法[J].上海力学,2002,23(2):173-181. |
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| 作者姓名： | 张洪武 |
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| 作者单位： | 大连理工大学 工业装备结构分析国家重点实验室，工程力学系，大连 116024 |
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| 基金项目： | 国家自然科学基金(50178016,19872016,19832010) |
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| 摘 要： | 在文1]工作的基础上，对非饱和多孔材料非线性问题进行分析，给出分析的本构模型，模型中考虑了毛吸压力的影响。给出问题分析的求解技术与算法策略，在此基础上，为保证迭代算法的收敛性，文中给出适合于广义塑性本构模型分析的一致性算法与一致性切线刚度矩阵。给出的数值算例证实了理论与算法的正确与有效性。
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| 关 键 词： | 非饱和多孔介质 本构方程 有限元法 一致性算法 非线性 土力学 |
| 修稿时间： | 2000年9月4日 |
A Self Consistent Algorithm for Non-linear Finite Element Analysis of Unsaturated Porous Media |
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| ZHANG Hong-wu.A Self Consistent Algorithm for Non-linear Finite Element Analysis of Unsaturated Porous Media[J].Chinese Quarterly Mechanics,2002,23(2):173-181. |
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| Authors: | ZHANG Hong-wu |
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| Abstract: | Based on the work shown in 1], the nonlinear analysis of unsaturated porous media was given in this paper. The constitutive relations of the materials, where the capillary pressure was considered, were presented. Furthermore, the consistent algorithm and consistent stiffness matrix for generalized plasticity constitutive model in analysis of partially saturated porous media were put forward to make the convergence process of iteration in a fast way. Finally, the numerical examples are given to demonstrate the validity and efficiency of the model and algorithm proposed. |
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| Keywords: | : unsaturated porous media constitutive equation finite element method self consistent algorithm |
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