The research on fatigue of crankshaft with the method of explicit dynamic

摘要

The crankshaft fillet rolling process is one of the commonly adopted methods in engineering to improve fatigue life of the crankshaft. The crankshaft fillet rolling process was simulated based on the explicit dynamic calculation in this paper. After the data acquisition program was compiled, the distribution of the crankshaft surface stress could be obtained. Coupling calculation between the operating stress at different bending moments and the rolling residual stress was based on the Smith-Watson-Topper (SWT) model. After the simulation on the crankshaft fillet rolling process was carried out, which was based on optimization rolling parameters, the crankshaft fatigue strength was improved by 8.6%.