Modelling fluid/solid coupling in high temperature assembly processes

Modelling fluid/solid coupling in high temperature assembly processes. A numerical tool for the simulation of the Friction Stir Spot Welding process is developed. The model is based on a fluid/solid coupling which describes the state of the material in the structure. The model includes the P1+/P1 finite-element, developed with a strong thermomechanical coupling, both for fluid and solid behaviours. The coupling, associated with an Arbitrary Eulerian Lagrangian approach, is implemented in a new option of the finite element code SYSWELD (R). We present here a first simulation of the Friction Stir Spot Welding process.