A Topology Optimization Method with Anisotropic Materials

Abstract

In this paper, we couple topology optimization with flnite element analysis. This combination, along with proven manufacturing techniques, enables the design and optimization of manufacturable topologies with anisotropic and heterogeneous material properties. An optimization algorithm is presented that simultaneously optimizes the topology on the macro scale, and the material properties of each element at the microstructure level by selecting and strategically orienting anisotropic materials. The anisotropic materials are selected from a materials database that was created by physically testing and measuring various material microstructures. Three examples illustrate the capabilities of the algorithm in simultaneously optimizing topologies and material properties. The coupling of material design and topology design can enable performance improvements that cannot be achieved without consideration to both.