WIT Press


A Boundary Element-mathematical Programming Method For Solving Elastoplastic Contact Problems

Price

Free (open access)

Paper DOI

10.2495/CON030041

Volume

38

Pages

11

Published

2003

Size

451.85 kb

Author(s)

A. Faraji, A. Cardou and A. Gakwaya

Abstract

A boundary element-mathematical programming method for solving elastoplastic contact problems A. Faraji, A. Cardou & A. Gakwaya Dept. of Mechanical Engineering, Lava1 University, Canada. Abstract For two- and three-dimensional elastoplastic stress analysis of frictional contact problems, an effective analysis method using a combination of the boundary element method (BEM) and mathematical programming (MP) approach is presented. The assumptions of small displacement and elastic perfectly plastic material behavior obeying the von Mises or Tresca criteria with associated flow rule are made. Not only are the contact boundary conditions expressed as a linear complementarity problem (LCP) with penalty factors in accordance with the analogy with plasticity, but the elastoplastic constitutive equations also are presented in the similar form. Based on these formulations and on a field BEM that uses the particular integrals, a unified LCP is derived to solve the elastoplastic contact problem. Some resul

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