Numerical simulation of linear friction welding: Effects of processing parameters

Numerical modeling of linear friction welding (LFW) of TC4 titanium alloy was conducted by using ABAQUS/Explicit. The coupled thermo-mechanical analysis was conducted by using the Johnson-Cook material law. The effects of processing parameters on the temperature evolution and axial shortening of LFW joints were numerically investigated. The results show that at a higher oscillation frequency, amplitude and friction pressure, the interface temperature reaches more quickly up to a high temperature and the axial shortening increases to a larger value at a faster rate. The influences of these three factors can be integrated to heat input. The axial shortening almost linearly increases with increasing the heat input as the heat input is higher than a critical value.