Various forms of fatigue damage often occur in retired engine camshafts during their service life,among which micro-cracks are common.These micro-cracks are difficult to repair and remove in subsequent remanufacturing processes.Based on ANSYS software,this paper predefines circumferential and axial semi-elliptical micro-cracks at different positions on the camshaft according to the possible occurrence of cracks.Stress analysis is performed on the camshaft containing micro-cracks to obtain stress data.The stress data is then imported into the fatigue analysis software nCode Designlife to conduct a fatigue life analysis of the camshaft.This study investigates the impact of cracks at different positions and directions on the residual life of the camshaft.The analysis results can serve as a theoretical criterion for the remanufacturing of retired engine camshafts.
维普
万方数据