虚功原理在建立界面应力元模型的应用  

APPLICATION OF LAW OF VIRTUAL WORK IN INTERFACE STRESS ELEMENT MODEL

作　　者：肖山[1] 

机构地区：[1]河海大学工程力学系,南京210098

出　　处：《安徽建筑工业学院学报（自然科学版）》2002年第3期24-27,共4页Journal of Anhui Institute of Architecture(Natural Science)

摘　　要：根据不连续的分片刚体模型和连续介质变形体的特点 ,建立了统一分析连续介质问题与不连续介质问题的新模型—界面应力元模型 ,应用虚功原理推导了其支配方程。由于界面元模型与分块单元形态无关 ,从而给网络剖分带来了方便 。the According to characteristics of the discontinuous piecewise rigid body model and the continuous deformable body model,new model-The Interface Stress Element Model(ISEM) is established,which can put both continuous media problems and discontinuous media problems into consideration.With the law of virtual work,the governing equations of ISEM are deduced.Interface element model has no relation with the shape of discrete elements,so it brings convenience to mesh generation.The ISEM is more accurate than FEM.

关 键 词：界面应力元模型 不连续介质 虚功原理 

分 类 号：O343.4[理学—固体力学]