Optimal plastic shape design of rotationally symmetric elements with conical bearing surfaces

The paper presents the boundary perturbation method applied to optimal plastic shape design. Perfect plasticity is assumed. The procedure consists of two steps: the class of fully plastic solutions in the limit state is first determined, and then the optimal shape is chosen from among these solutions. Rotationally symmetric elements with conical bearing surfaces are considered. The optimal angle of inclination of such surfaces is also evaluated. The final results are verified by means of the ADINA program.