The use of general description in finite element analysis of geometrical nonlinear problems

摘要

The paper deals with the use of a general description in the formulation of finite element analysis of geometrical nonlinear structural problems. In the formulation, the total displacement field is denoted with respect to an intermediate known referential configuration. By doing so, the total displacement field is decomposed into two parts, i.e., an Eulerian part and Lagrangian part. It turns out that the presence of Eulerian displacement components provides casy modeling of certain displacements in some class of special structural problems, such as slip-separation problems and remeshing techniques.