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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Design for Mechanical Behavior of Architectured Materials via Topology Optimization
Presentation Title Topology Optimization with RVE Lattice Structures Subject to Additive Manufacturing and Stress Design Constraints
Author(s) David Weinberg, Nam-Ho Kim
On-Site Speaker (Planned) David Weinberg
Abstract Scope 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.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


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Inverse Homogenization Design of Micro-truss Architected Materials Using Geometric Primitives
Mechanical Properties of Work Hardened Steel Multilayers with Bimodal Grain Size
Multiscale Design with Architected Material Connectivity for Multiphysics Problems
Optimal Design of Architected Materials with Extreme Energy Dissipation
Optimized Microlattices for High Strength and Impact Attenuation
Realizing Optimized Mesoscale 3D Architected Material Designs via Nanoparticle Assembly by Pointwise Spatial Printing
Tailoring the Dynamic Properties of 3D Woven Metallic Lattices through Topology Optimization
Topology Optimization for Sliding Abrasive Wear of Bi-material Composites
Topology Optimization of Architected Materials with Application-specific Tailored Properties
Topology Optimization of Cellular Materials with Tailored Band Gaps
Topology Optimization of Multi-material Truss Lattice Structures via Geometry Projection
Topology Optimization with RVE Lattice Structures Subject to Additive Manufacturing and Stress Design Constraints

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