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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Frontiers of Materials Award Symposium: Leveraging Materials in Topology Optimization
Presentation Title Topology Optimization for Additive Manufacturing
Author(s) Albert To
On-Site Speaker (Planned) Albert To
Abstract Scope This presentation will feature several topology optimization methods recently developed for designing functionally-graded lattice infill, support structure, and build orientation for laser powder bed additive manufacturing (AM), in order to address various manufacturability and residual stress/distortion issues. An efficient homogenization-based topology optimization method for optimizing the design of functionally-graded lattice infills in AM components for weight savings and performance enhancement will be presented. The motivation for developing this method is to overcome the inability of conventional topology optimization methods to eliminate overhangs that are not self-supporting in AM. The proposed method takes advantage of the self-supporting nature of lattice structures, as well as the tunable thermal and mechanical properties of lattices by varying their strut size. Next, a support structure design optimization method that reduces residual stress and distortion in an AM build is presented. The key novelty of this method lies in the formulation of the modified inherent strain model which enables fast and accurate prediction of part-scale residual stress and deformation resulting from laser processing. The model reduces simulation time to a matter of minutes from hours/days using other existing methods and thus makes it practical to use topology optimization for AM support structure design.
Proceedings Inclusion? Undecided

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Large Scale Level Set Topology Optimization
Level Set Topology Optimization with the Reproducing Kernel Particle Method
Leveraging Materials in Topology Optimization
Materials, Design and Emerging Objects
Multiscale Design Optimization for Integrated Structural-material Systems
Multiscale/Level Design of Materials and Structures
Nonlinear Composite Materials Design through Multi-material Topology Optimization Frameworks
Part-Scale Support Structure Optimization for Minimizing Residual Stress for Laser Powder Bed Fusion Additive Manufacturing
Sustainable Fashion Design, 3D and 4D Printing, and The New Age Lab
Topology Optimization Design of Negative Stiffness and Stretchable Metamaterial via Bezier-based Explicit Density Representation Algorithm
Topology Optimization for Additive Manufacturing
Topology Optimization for Architected Materials
Topology Optimization of Load Carrying Heat Exchangers and Battery Packs
Topology Optimization of the Fast Heat Responsive Structures via a Level-set Method

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