| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Microscale Modeling of Solidification and Residual Stress in As-Built Additively Manufactured Parts |
| Author(s) |
Lukasz Kuna, Kirubel Teferra |
| On-Site Speaker (Planned) |
Lukasz Kuna |
| Abstract Scope |
As additive manufacturing (AM) technologies continue to progress and advance, so do capabilities to create more complex designs that are otherwise too difficult or expensive to build using traditional methods. As opposed to traditional methods, parts manufactured via AM undergo highly localized, large temperature gradients during high-frequency thermal cycles that result in high residual thermal stress. In this work, a cellular automata finite element (CAFE) approach has been developed and utilized to examine and better understand the microstructures of AM builds specifically with regards as to how various laser parameters influence not only the resulting microstructure, but also the mechanical properties. A combination of AMCAFE and MOOSE Multiphysics finite element simulations have been carried out to simulate the thermomechanical processes of solidification leading to residual stress development. The effects of processing parameters, and therefore microstructure, on stress and strain variability, including plastic response, will be presented for various thin-wall structures. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Modeling and Simulation, ICME |