The residual welding stresses and distortion of a structure are very closely connected and exert an influence on each other. In industry, major efforts are being made with a great scope of time and costs in order to optimise components in this regard for the intended application concerned in practical tests. With the aid of a numerical simulation which is capable of portraying the complex connections between residual welding stresses and distortion in the model and of calculating these in a realistic way, the development costs can be lowered considerably by avoiding time-intensive practical tests and the competitiveness of the companies can be increased by shorter product cycles. While simulation is already established in practice in many fields of mechanical engineering and vehicle construction (e.g. for investigating the crash behaviour or designing a forming process), the optimisation of welded joints is frequently still based on practical tests. In order to come closer to the objective of virtual product development by coupling various simulation tools, possibilities must exist for the reliable determination of residual welding stresses and welding distortions and reference may be made to these as the basis for the calculation of subsequent processes (forming or crash) or for the numerical service life analysis.
Calculation and measurement of residual stresses in aluminium welded joints
Berechnung und Messung der Restspannungen in Schweißpunkten von Aluminium
Welding and Cutting ; 6 , 6 ; 342-347
2007
6 Seiten, 8 Bilder, 5 Quellen
Article (Journal)
English
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