| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
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Additive Manufacturing and Alloy Design: Bridging Fundamental Physical Metallurgy, Advanced Characterization Techniques, and Integrated Computational Materials Engineering for Advanced Materials
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| Presentation Title |
Development and Validation of Topology Optimization Methodologies for Lattice Structured Architectures |
| Author(s) |
Calvin M. Downey, Max Nezdyur, Lynn Munday, Swapnil Morankar, Cameron Howard, Jakub Toman, Carolyn Seepersad, Boone Beausoleil |
| On-Site Speaker (Planned) |
Calvin M. Downey |
| Abstract Scope |
Lattice structured architectures can dramatically reduce the bulk weight of components while retaining much of the structural integrity of the base material. Currently, Idaho National Laboratory is developing new Multi-physics Object-Oriented Simulation Environment (MOOSE) tools for topology optimization of complex components. These advanced tools employ Solid Isotropic Material with Penalization (SIMP) methods to simulate and efficiently optimize the lattice structures using homogenized unit cells. To accurately model lattice geometries and reduce the dimensionality of the computation, a projection- and physics-based reduced order model (ROM) was employed with high-order elemental basis. Optimization simulations are experimentally validated and improved with multi-scale characterization methods. Lattice struts ranging from 0.4mm to 0.7mm in thickness were fabricated using direct laser metal sintering (DMLS) from stainless steel 316L. Latticed tensile bars, 7x7 octet-truss unit cell cubes, and engineering-scale components are characterized, and resulting material properties are input into MOOSE simulations and ultimately compared to experimental results. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Modeling and Simulation |