AN ELASTOPLASTIC CONTACT BEM BY PARTICULAR INTEGRALS AND MATHEMATICAL-PROGRAMMING

A unified boundary element formulation for solving elastoplastic conta ct problems with friction and varying contact surface is presented. Th e volume integration encountered often in plastic structural computati on is avoided by introducing some particular integrals. The similariti es of complementarity conditions for both contact and plastic analyses make it possible to express the contact criterion and plastic flow ru le in the same way. The resulting PLCP (Parametric Linear Complementar ity Problem) formulation is implemented in an existing PLCP elastic fr ictional contact modular code of a general purpose boundary element an alysis system.