Análise limite de problemas de estado plano

Abstract

This work presents a methodology for the determination of the collapse load in plane strain and plane stress problems, based on the Plasticity Limit Theorems. For transforming the limit analysis problem into a linear programming problem, the discretization of the variables into isoparametric finite elements and the sectional linearization of the yield surfaces was required. The yield surfaces were based on the Tresca and von Mises resistence criteria. For solving the linear programming problem a revised Simplex algorithm was used in the computer program developed for checking the formulation.