用‘罚函数’法处理三维变厚度节理元嵌入接触问题

The"Penalty Function" Method for Modifying the Imbedding and Contact Conditions in Three-Dimensional Joint Elements

该文应用约束变分原理的罚函数方法计入三维节理单元的嵌入接触约束条件修正 ,推导了修正的接触刚度矩阵和接触荷载向量 .并给出了增量有限元求解节理单元接触问题的程序框图 .

In this paper the'penalty function'method based on constrained variational principle is applied to modify the constrained conditions in imbedding and contact problems of three-dimensional joint elements, with the modified contact stiffness and contact load vector derived. Also presented is a program chart showing how to use the incremental finite elements method to solve the contact problems of three-dimensional joint elements