含节理单元的三维p型自适应有限元解法  

Solution of 3-D p-version adaptive finite element method containing joint elements

作　　者：费文平[1] 陈胜宏[1] 

机构地区：[1]武汉大学水利水电学院,湖北武汉430072

出　　处：《水利学报》2003年第4期58-66,共9页Journal of Hydraulic Engineering

基　　金：国家自然科学基金(59979021);教育骨干教师基金资助

摘　　要：本文提出了含三维无厚度节理单元、等厚度节理单元和变厚度节理单元的p型自适应有限元模型,给出了三维节理单元升阶谱有限元法的解题步骤,通过具体算例,验证了p型升阶谱有限元法在求解含三维节理单元的有限元问题时的可行性及优越性。A numerical models of 3D joint element with zero thickness, uniform thickness and variable thickness were proposed. The solving steps by applying hierarichial finite element method (FEM) of the 3D joint elements were given. Two examples were computed with the model and the results indicated the feasibility and superiority of pversion FEM when solving finite element problems containing joint elements.

关 键 词：节理单元 升阶谱有限元 p型有限元 

分 类 号：TU457[建筑科学—岩土工程]