About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Design, Materials, Manufacturing, Challenges and Applications
|
| Presentation Title |
Multi-scale Characterization and Development of SIMP Topology Optimized SS316L Lattice Structured Architectures for Lightweighting Applications |
| Author(s) |
Calvin M. Downey, Max Nezdyur, Lynn Munday, Swapnil Morankar, Cameron Howard, Jakub Toman, Carolyn Seepersad, Geoffrey Beausoleil |
| On-Site Speaker (Planned) |
Calvin M. Downey |
| Abstract Scope |
Lattice structured architectures offer promising solutions for reducing the weight of components while preserving much of the base material's structural integrity. In the current research, multi-scale optimization, manufacturing, and characterization techniques are used to enhance the design and performance of lattice structures. Idaho National Laboratory (INL) is pioneering new Multi-physics Object-Oriented Simulation Environment (MOOSE) tools for optimization of these architectures. These advanced tools employ Solid Isotropic Material with Penalization (SIMP) methods to simulate and efficiently optimize the lattice structure's topology using homogenized lattice unit cells. The optimization process characterizes effective properties and dictates the fabrication requirements of the lattice structure architectures. Representative lattice struts ranging from 0.4mm to 0.7mm in thickness are fabricated using direct laser metal sintering (DMLS) from stainless steel 316L (SS316L). Lattice tensile bars, 7x7 octet-truss unit cell lattice cubes, and engineering-scale components will undergo rigorous multi-scale characterization to validate their properties and performance. |