|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Design for Mechanical Behavior of Architectured Materials via Topology Optimization
||Topology Optimization with RVE Lattice Structures Subject to Additive Manufacturing and Stress Design Constraints
||David Weinberg, Nam-Ho Kim
|On-Site Speaker (Planned)
This paper discusses recent developments in topology optimization and lattice structures implemented in Autodesk Nastran. Lattice structures enable very lightweight and efficient structures. Adding lattice structures to Autodesk Nastran provided a means to also support these structures in topology optimization using RVEs so that non-homogeneous tetra element meshes can be used to obtain optimized designs. The lattice material, size, and type are fixed within each design space and multiple design spaces are allowed. A standard topology optimization is run and the lattice material stiffness is updated every iteration and stresses and stability indexes are computed which reflect actual lattice beam member values. Additive manufacturing constraints are enforced on the overall. Lattice beam member radii are adjusted for each element (each lattice cell) to further minimize weight and ensure structural robustness. A demo model will be shown that accomplishes all of this.
||Planned: Supplemental Proceedings volume