|About this Abstract
||Materials Science & Technology 2019
||Sintering and Related Powder Processing Science and Technologies
||Stochastic Modeling of the Effect of Structural Randomness on the Mechanical Behaviors of 3D Printed Metallic Powders
||Skylar Mays, Mujan Seif, Katherine Moody, Matthew Beck
|On-Site Speaker (Planned)
Additive manufacturing in the form of 3D printed metals allows for the on-demand fabrication of complex metallic shapes, rapid prototyping, and opportunities to reduce cost and carbon footprint. Additive manufacturing of metals is a layer-by-layer process involving the laser sintering of metallic powder precursor. Because sintered powders are in an inherently random configuration, computational models of their behavior are difficult to construct. Here, we present a computational approach capable of generating representative volumes of spheroid-based powders. Using a finite element approach to compute mechanical properties, we reveal a macroscopic sensitivity to several factors: spheroid shape, reduced density, and spheroid overlap. These results yield great insight into effect of microstructure on macroscopic behavior of precursor metallic powders during laser sintering and will catalyze other ongoing efforts in the field.
||Definite: At-meeting proceedings