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

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.