Minimizing the Maximum Stress with Volume Constraint

The described example uses the following model:

(Design elements are shown in blue, the elements in red are defined as non-design elements due to loads and boundary conditions.)

The optimization target is to minimize the maximum von Mises stress with a volume constraint of 30%:

The following diagram shows the difference between the maximum elemental centroidal von Mises stress calculated by the FE solver and the stress interpolated by SIMULIA Tosca Structure: