Abstract
AbstractA key element of a successful welding simulation is the right selection of the model used as the heat source. The characteristics of the heat source, such as geometry, dimensions and heat value, must be selected according to the welding process and the weld geometries. This chapter describes various models that have been used so far to represent different welding processes and geometries. Arc welding, resistance welding, beam welding and friction stir welding (FSW) processes as well as common welding, narrow gap welding and key-hole welding are discussed. The validation methods of the models used for the heat source are also explained. In this way, a reliable thermal modelling of the welding processes can be achieved by considering the thermal boundary conditions and various mechanisms of heat dissipation such as conduction, convection, and radiation. The output of the thermal modelling is then suitable to be used in mechanical modelling in a subsequent stage.
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