Topology Optimization using Explicit Stress Tensor Analysis

In this work, a framework for an inedited method for mechanical structures optimization is proposed. It is performed by re-arranging the Topology Optimization mesh obtained by BESO according to mechanical parameters. The principal stresses and the slope of the principal reference system are calculated, mesh elements are rotated, and a process of joining and size-modifying elements is performed. In a further step, a fine gradient based shape optimization may be applied. The main advantage of the method is that the final layout is created by modifying the orientation of the resulting elements, and an enhanced distribution of material is achieved. The goal is to overcome the sensitivity problems of other methodologies, and to reduce undesired checkerboard pattern. Finally, the preliminary results of a first implementation of the methodology are presented.