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        Thermal analysis of friction stir welding process and investigation into affective parameters using simulation

        Mahmoud Abbasi,Behrouz Bagheri,Rasoul Keivani 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.2

        Friction stir welding (FSW) as an efficient solid state joining process has numerous applications in industries. Temperature distributionanalysis through simulation not only brings the possibility to characterize the microstructure of different zones, but also enables one tosave cost and energy as optimum welding variables are obtained with less concern. In the present study, the temperature distributionduring the friction stir welding (FSW) process of AA6061-T6 was evaluated using finite element method (FEM). Since experimentalmeasurements cannot be readily made in the weld region, it is difcult to understand physics in the stir zone of the welds without simulation. Abaqus software was applied to model the parts and simulate the process of welding, while Johnson-Cook law utilized to evaluatethe effect of strain rate and generated heat. FE-results were verified by experimental results. The comparisons revealed a good compatibilitybetween the results. The effect of probe shape on temperature distribution was also studied. It was found that spherical pins result inthe highest temperatures at workpieces with respect to cylindrical and tapered pins. Additionally, it was concluded that more heat is generatedin workpieces as pin angle increases.

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