A finite element for laminar flow of incompressible fluids with inertia effects and thermomechanical coupling
DOI:
https://doi.org/10.13052/EJCM.19.293-304Keywords:
fluid finite element P1 /P1, Friction Stir Spot Welding, unsteady caseAbstract
The Friction Stir Spot Welding (FSSW) process involves large deformations in the neighborhood of the tool. The simulation of this process has to account for a pasty phase in which the material is stirred, and a phase remaining solid. An Arbitrary Lagrangian Eulerian (ALE) approach combined with respectively fluid and solid behaviours in each of those phases may allow to simulate a lot of rotations of the tool into the material while following the boundaries of the sheets. This work focuses on a first stage of this study, the development of a mixed formulation temperature/velocity/pressure of a fluid finite element P1+/P1 in the unsteady case.
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