Untersuchung von Schweißeigenspannungen an Aluminiumkonstruktionen

In this work the influence of various situations as constraints, plate thickness, geometry, alloy and welding speed on residual stress is investigated by means of simulation. Essential for the calculation are the temperature curves during the welding process and the temperature-dependent material data. For the calibration of the temperature field temperature cycles of many welding tests are measured. For this purpose both bibliografical data and data of the own measurement are used. On the base of this input data a successful validation of the residual stress curves could be done. The different variants could then be calculated with the commercial simulation program Sysweld(R), which also gives explanations and indications for the development of the residual stress during and after the welding of aluminium constructions.