|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Design for Mechanical Behavior of Architectured Materials via Topology Optimization
||Topology Optimization of Multi-material Truss Lattice Structures via Geometry Projection
||Hesaneh Kazemi, Julián A. Norato, Ashkan Vaziri
|On-Site Speaker (Planned)
We present a method for the design via topology optimization of multi-material truss lattice structures for specified bulk properties. Each strut is made of one of several available materials. Our method employs the geometry projection technique, whereby an explicit description of the geometry of each strut in the lattice is smoothly mapped onto a density field on a fixed analysis grid. A size variable is assigned to each strut per material. A value of unity indicates the bar is made of the corresponding material. Moreover, all size variables can be zero, which signifies the strut is removed altogether from the lattice. We penalize the size variables so that at most one size variable in a strut can be unity, and so that all size variables are close to 0 or 1, in the spirit of the solid isotropic material penalization (SIMP) technique. We demonstrate our method with several numerical examples.
||Planned: Supplemental Proceedings volume