|About this Abstract
||Materials Science & Technology 2020
||Additive Manufacturing Modeling and Simulation: AM Materials, Processes, and Mechanics
||A System Dynamics approach to submodels for Residual Stress Predictions of SLM Parts
||Jose Mayi-Rivas, Seetha Raghavan
|On-Site Speaker (Planned)
Accurate predictions of residual stress distributions within Additive Manufacturing parts typically require complex thermomechanical finite element models (FEM). One of the main methods to reduce model complexity involves the use of a micro or mesoscale submodel, results of which are then applied to a macroscale simulation to obtain complete displacement and stress fields. This work proposes an innovative approach by replacing the micro level FEM with energy-based system dynamic equations that can be explicitly correlated to the sum of all contributions to the residual stress. Results are validated with existing FEM submodels in literature and eventually with X-ray diffraction measurements.