TY - JOUR A1 - Bachmann, Marcel A1 - Rethmeier, Michael A1 - Wu, Chuan Song T1 - Sensitivity analysis of the residual stress state in friction stir welding of high strength aluminium alloy T2 - Materials testing N2 - In this paper, the friction stir welding process was numerically investigated for 6 mm thick aluminum alloy AA2024-T3. The finite element software COMSOL Multiphysics was used to calculate the transient thermal field during welding and the mechanical reaction depending on different mechanical clamping conditions and hardening models subsequently. A thermal pseudo-mechanical (TPM) heat source was implemented. Softening effects of the material due to precipitation hardening dissolution caused by the frictional heat were accounted for. The transient temperature evolution measured by thermocouple elements at various locations was compared to the numerical results. A good agreement was found for the thermal field. A sensitivity study of the mechanical models showed the strong influence of the clamping conditions and the softening model. PB - Hanser CY - München PY - 2016 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/35269 AN - OPUS4-35269 SN - 0025-5300 VL - 58 IS - 1 SP - 20 EP - 26 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany