| 率相关饱和多孔介质动力响应的数值分析 |
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| 引用本文： | 姜乃斌,刘占芳.率相关饱和多孔介质动力响应的数值分析[J].工程力学,2011(9):137-142. |
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| 作者姓名： | 姜乃斌 刘占芳 |
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| 作者单位： | 中国核动力研究设计院核反应堆系统设计技术重点实验室;重庆大学资源及环境科学学院工程力学系; |
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| 基金项目： | 国家自然科学基金项目(10172098) |
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| 摘 要： | 在基于混合物理论的多孔介质模型的基础上，将固体相视为弹粘塑性体，建立了饱和多孔介质的弹粘塑性模型。模型的基本思想是在无粘弹塑性本构关系中引入-时间参数，使固体骨架具备了粘性效应。利用Galerkin加权残值法推导得到了罚有限元格式，并采用Newmark预估校正法求解率相关饱和多孔介质的非线性有限元动力方程，此算法可以很...
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| 关 键 词： | 工程力学 多孔介质力学 数值分析 率相关：流固耦合 |
NUMERICAL ANALYSIS ON DYNAMIC RESPONSE OF RATE-DEPENDENT SATURATED POROUS MEDIA |
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| JIANG Nai-bin,LIU Zhan-fang.NUMERICAL ANALYSIS ON DYNAMIC RESPONSE OF RATE-DEPENDENT SATURATED POROUS MEDIA[J].Engineering Mechanics,2011(9):137-142. |
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| Authors: | JIANG Nai-bin LIU Zhan-fang |
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| Affiliation: | JIANG Nai-bin1,LIU Zhan-fang2(1.Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu 610041,China,2.Department of Engineering Mechanics,Chongqing University,Chongqing 400044,China) |
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| Abstract: | In the light of porous media model developed from mixtures theories,the solid skeleton was considered as elasto-viscoplastic material,and an elasto-viscoplastic model of saturated porous media was established.By adding a time parameter in inviscid elasto-plastic constitutive relation,the viscoplasticity was introduced into the solid skeleton.A penalty finite element formulation was attained by using Galerkin weighted residual method,and a Newmark predictor-corrector iterative scheme was designed to solve th... |
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| Keywords: | engineering mechanics porous media dynamics numerical analysis rate-dependent fluid-solid coupling |
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