基于物质点方法饱和多孔介质动力学模拟(Ⅱ)——饱和多孔介质与固体间动力接触分析  

Material point method for dynamic analysis of saturated porous media (Ⅱ): dynamic contact analysis between saturated porous media and solid bodies

作　　者：张洪武[1] 王鲲鹏[1,3] 陈震[1,2] 

机构地区：[1]大连理工大学运载工程与力学学部工程力学系,工业装备结构分析国家重点实验室,辽宁大连116024 [2]美国密苏里大学哥伦比亚分校土木工程系,密苏里哥伦比亚65211-2200 [3]美国北京宇航系统工程研究所,北京100076

出　　处：《岩土工程学报》2009年第11期1672-1679,共8页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金项目(10721062);国家自然科学基金项目(50679013);国家自然科学基金项目(10728205);教育部111引智计划项目;国家重点基础研究发展规划(973计划)(2010CB832704)

摘　　要：基于物质点方法(material point method,MPM)理论框架,提出了处理饱和多孔介质与固体间动力接触问题的新方法。其中饱和多孔介质的动力学响应通过文献[1]中发展的耦合物质点方法进行分析,单相固体的力学行为由传统单相物质点方法进行预测。通过本文提出的接触算法使二者相结合,在保证饱和多孔介质与固体间不存在相互穿透的前提下,允许饱和多孔介质与固体间的相互滑动,以预测整个接触/碰撞系统的动力学响应。同时进行了数值算例计算,通过算例验证了此方法的正确性,展示了此方法有效性。The strategy for the dynamic contact between saturated porous media and solid bodies is proposed in the frame work of material point method （MPM）, where the dynamic responses of saturated porous media and solid bodies are respectively simulated using the coupling MPM and the original MPM. The link between the two kinds of MPMs is the contact algorithm proposed in the current research, in which the slip between saturated porous media and solid bodies is allowed with the assumption that the penetration between saturated porous media and solid bodies is forbidden and follows the Coulomb friction law. The results of numerical calculations demonstrate the validity of the proposed strategy which shines a light of modeling the problems of soil-structure interaction in a new and effective way.

关 键 词：物质点方法 饱和多孔介质 动力接触分析 

分 类 号：TU435[建筑科学—岩土工程] O343.3[建筑科学—土工工程]