TWI Industrial Member Report Summary 437/1991
By S D Smith
Modelling of the welding process is currently fragmented. Thus arc physics and weld pool dynamics are not modelled in conjunction with a simulation to predict residual stresses and distortion. This review considers only modelling for the prediction of residual stresses and distortion; that is, methods of predicting heat flow from the heat source and the associated transient thermal stresses leading to distortion and residual stresses. The report mainly considers computer numerical techniques. The welding processes which have been modelled are given, and accuracy is assessed.