TY - JOUR A1 - Su, H. A1 - Wu, Chuan Song A1 - Pittner, Andreas A1 - Rethmeier, Michael T1 - Thermal energy generation and distribution in friction stir welding of aluminum alloys T2 - Energy N2 - The accurate prediction of the thermal energy generation and distribution in friction stir welding process is of great significance for the optimization of the process parameters and the understanding of the underlying mechanisms. In this study, a new method of integrative calculation and measurement is proposed to obtain the more reasonable values of the frictional coefficient and the slip rate, which are both used to characterize the heat generation rate at the tool-workpiece contact interfaces. A three-dimensional model is established to fully couple the energy generation, heat transfer and material flow in friction stir welding of aluminum alloys. The energy produced by both interfacial friction and plastic deformation are taken into consideration. The analysis accuracy of the thermal energy generation and distribution is improved, and the distribution features of thermal energy density in the vicinity of the tool are elucidated. The predicted peak temperature values at some locations are in agreement with the experimentally measured ones. PB - Elsevier CY - Amsterdam [u.a.] KW - Thermal energy generation KW - Energy density distribution KW - Heat transfer KW - Material flow KW - Friction stir welding PY - 2014 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/32076 AN - OPUS4-32076 SN - 0360-5442 VL - 77 SP - 720 EP - 731 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany