Response Surface Optimization and Stress Analysis of Crankshaft Fillet Rolling Process Parameters

Aiming at the strengthening process of crankshaft fillet rolling, the rigid body dynamic model of fillet rolling is established by using the workbench of ANSYS finite element analysis software. Taking the residual stress at the fillet as the constraint condition, the response surface optimization of process parameters is carried out by using workbench design exploration. Based on the model, the effects of optimized rolling pressure and rolling feed on the stress distribution at the crankshaft fillet during rolling are analyzed. The simulation results show that the optimized rolling pressure and rolling feeds are 13KN and 0.3mm respectively. The stress is the largest at 45deg of the outer surface of the fillet, and the stress on both sides is the smallest. In the depth direction, the stress decreases with the increase of depth, and the deceleration slows down after the depth exceeds 1mm. The finite element analysis software can provide a reference for actual machining and stress testing.