About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Frontiers in Solidification: An MPMD Symposium Honoring Jonathan A. Dantzig
|
Presentation Title |
Rationalization of the Modelling of Stress and Strain Evolution in Powder Bed Fusion Additive Manufacturing – A Perspective from a Background in the Simulation of Casting Processes |
Author(s) |
Steve lee Cockcroft |
On-Site Speaker (Planned) |
Steve lee Cockcroft |
Abstract Scope |
There has been a tremendous body of work recently appearing in the literature focused on additive manufacturing including experimental based investigations, numerical investigations and combinations of the two. These studies generally focus on understanding and mitigating defect generation to improve product quality while minimizing cost. One defect of concern is residual component distortion and stress. In this paper, a coupled thermo-mechanical Finite Element (FE) model was developed to examine the buildup of in-elastic strain in Ti6Al4V during solidification of the melt pool at the mesoscale. The major challenges in developing an accurate model are discussed with reference to the lessons learned in modelling thermal stress generation and in-elastic strain accumulation in casting processes. Key areas requiring careful consideration include the high temperature constitutive and thermal strain behaviour as the material transitions from liquid, through a semi-solid state to a fully solid material. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Modeling and Simulation, |