08-01-2014, 12:29 PM
Heat Transfer Analysis in Friction Stir Welding of AL-7XXX
Heat Transfer.docx (Size: 42.34 KB / Downloads: 26)
INTRODUCTION:
A three dimension non linear thermomechanical model has to used to study the effect of selected perameter on FSW. Simulation comprises of two stages. Firstly, thermal behavior of the piece while undergoing the welding process has to be study. Heat is generated due to the friction between tool and the piece being welded. In the second stage, attained thermal behavior of the piece from previous stage is considered as inlet heat of thermomechanical model for the prediction of residual stress work. The thermal modeling is done by APDL(Ansys Parametric Design Language) .A thermal model used in FSW . The purpose of the thermal model is to calculate the transient temperature fields developed in the work piece during friction stir welding. In the thermal analysis, the transient temperature field ? which is a function of time ? and the spatial coordinates (?,,?), is estimated by the three dimensional nonlinear heat transfer equation.