Quadratic Programming Method for Numerical Modeling of Elastoplastic Contact Problems: Theory, Software, Applications

摘要

This paper reviews some advances and applications in Parametric Quadratic Programming (PQP) method for numerical modeling of elastoplastic contact problems. The Parametric Variational Principle (PVP) and the corresponding finite element model for numerical simulation of 3D elastoplastic frictional contact problems with isotropic/anisotropic (orthotropic) friction law are presented. The finite element software JIFEX is then developed with the application oriented concept for nonlinear analysis of complex structures in general purposed engineering. Some typical engineering applications such as compressor impeller and the railway wheel/rail contact analysis are hown to illustrate the potential of the software developed.