| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XII
|
| Presentation Title |
The Influence of Flow Stress Data and Friction Models on 2D and 3D Simulations of Friction Stir Welding in AA 2219-T76 |
| Author(s) |
Kennen Brooks, Bryan Ramos, Michael P. Miles, Tracy Nelson |
| On-Site Speaker (Planned) |
Michael P. Miles |
| Abstract Scope |
The modeling of friction stir welding has long been challenged by a lack of accurate flow stress data over the large range of temperatures and strain rates that are typical of the process. Most often, hot compression or hot torsion tests are used to measure flow stresses, but the strain rates and deformation modes associated with these tests do not emulate the high strain rate shearing that occurs near the friction stir welding tool. An alternate method of measuring flow stresses for the modeling of FSW is employed, using a high-pressure shear approach. The influence of accurate flow stresses on model prediction, along with a study of different friction laws and their influence on predicted welding temperatures, are presented for plunge experiments, as well as for self-reacting friction stir welding of a linear joint. The influence of tool thermal properties on local flow stresses and material flow were also investigated. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Joining, Modeling and Simulation, Aluminum |