About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing Modeling, Simulation and Machine Learning
|
Presentation Title |
Simulation of Residual Stresses, Deformations, and the Effect of Support Removal in Additively Manufactured Thin Plates |
Author(s) |
Pouria Khanbolouki, Rodrigo Magana-Carranza, Eann Patterson, Chris Sutcliffe, John Lambros |
On-Site Speaker (Planned) |
Pouria Khanbolouki |
Abstract Scope |
In laser powder bed fusion (L-PBF) of quasi-2D metallic structures, the complex thermal events cause residual stresses that induce out-of-plane deflections. While the build platform supporting the parts during the process limits their distortion, the removal of supports from the platform (cutoff) activates additional permanent deformations and redistribution of residual stresses in the parts. Here, we use finite element analysis to predict residual deformations and stresses of thin Inconel 625 plates during their build process and removal sequence. Identical experimental builds were prepared for comparison. The forces exerted on a horizontal plate during the build process were measured with a custom-made build platform. A second set of plates were also built in a vertical orientation and the full-field residual shape, before, during and after the removal step were captured using stereo digital image correlation. Subsequently, residual deformations induced in thin metallic plates by different part removal sequences were examined. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Modeling and Simulation, Copper / Nickel / Cobalt |