PIES with Trimmed Surfaces for Solving Elastoplastic Boundary Problems

The paper presents the strategy for solving elastoplastic problems using a parametric integral equation system (PIES) and a trimming technique. It allows even complex shapes of a plastic zone to be modeled with a single surface and a set of trimming curves. New schemes for integration and approximation of solutions are developed to include changed requirements. However, both of them have kept their advantages. Some examples are solved, and the obtained results are compared with analytical solutions and those received from other numerical methods.