About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
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Additive Manufacturing Modeling, Simulation, and Machine Learning: Microstructure, Mechanics, and Process
|
Presentation Title |
Thermomechanical Modeling of Axisymmetric Geometries for Laser Hot Wire Additive Manufacturing |
Author(s) |
Elizabeth Chang-Davidson, Brandon Abranovic, Jack Beuth |
On-Site Speaker (Planned) |
Elizabeth Chang-Davidson |
Abstract Scope |
Large-scale laser hot wire additive manufacturing shows promise for production of parts difficult to manufacture using conventional methods, as well as unique benefits relative to other additive processes. However, as this is a relatively new process, modeling work is required for part deposition planning. Axisymmetric geometries are of particular interest due to their frequency in real part geometries. Two major considerations when printing are ensuring consistent material properties throughout the part, as well as excessive part deformation in the build process. Using semi-analytical as well as finite element methods, thermal histories as well as part deformations for different deposition strategies in axisymmetric geometries were modeled in order to select optimal print conditions. Once the prints were completed, experimental results were compared to model predictions and used to further refine the models. As a result, a methodical process for selecting deposition strategies for successful printing of axisymmetric geometries was developed. |