Although they have already been in use for decades, welding processes are still some of the most mathematically complex methods that can be described. The reason for this is the localised heat input, with its very short heating and cooling periods and the related effects on the mechanical and metallurgical properties in the fusion zone. Thanks to the availability of high-power computers, numerical computer programs make it possible for the thermo-mechanical properties of welded structures to be reproduced in numerical simulations. To demonstrate the applicability of structural welding simulation for the purpose of optimising distortion, Simufact Engineering and Edag Engineering Schweiz worked together on a project aimed at calculating the problem of distortion in a special coupling jaw cross member of a heavy-duty tractor unit. …
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