| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Large-scale Metallic Components
|
| Presentation Title |
Mitigating Large Distortion in Wire Arc Additive Manufacturing via Topology Optimization and Modified Inherent Strain Modeling |
| Author(s) |
Wen Dong, Xavier Jimenez, Albert To |
| On-Site Speaker (Planned) |
Albert To |
| Abstract Scope |
Applying wire arc additive manufacturing (WAAM) to manufacture large-scale metallic products is growing. However, due to the large part size and intensive energy input, the heat accumulation during the WAAM deposition is significant, resulting in extensive residual stress and distortion in the deposit and base plate. In the present work, an extra fixture is installed beneath the base plate to prevent structural distortion and ensure post-processing feasibility. The fixture design is based on topology optimization with the objective of compliance minimization. In each iteration, the temperature-dependent modified inherent strain (MIS) method is used to apply the load by simulating the deposition process. Using these methods, the fixture design produced is shown to reduce the distortion of the component by over 90%, demonstrating the effectiveness of the approach. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Modeling and Simulation, Process Technology |