| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Additive Manufacturing Modeling and Simulation: AM Materials, Processes, and Mechanics
|
| Presentation Title |
Design Optimization for Residual Stress in Complex Low-density Support Regions |
| Author(s) |
Kevin A. Glunt, Shawn Hinnebusch, Owen Hildreth, Wen Dong, Xuan Liang, Florian X Dugast, Albert To |
| On-Site Speaker (Planned) |
Kevin A. Glunt |
| Abstract Scope |
Support structure can be built using different design parameters to ensure easier post processing removal in laser powder bed fusion (LPBF) metal components. The objective is to add additional features to a numerical design optimization method using a modified inherent strain method that quickly predicts the stress and deformation of the support and part. A projection scheme is used which takes the minimum support required and maps the domain of the support structure. The density field is used with support lattice topology optimization to minimize the mass subjected to a yield stress constraint. This will ensure the structural integrity of the reduced support region and reduce the overall chance of cracking by limiting the residual stress. This method is effective in predicting the optimized geometry for low density support regions. Numerical and experimental results prove the successful printing of multifaceted geometries with complex support structures using the proposed method. |