Fatigue life analysis and vibration reduction research of certain airborne fan
Based on the material S-N curve and Miner linear damage accumulation theory,the fatigue life of a certain airborne fan casing was analyzed through joint simulation with ANSYS and nCode DesignLife.The fatigue result cloud map of the fan casing and the fatigue life of each node were obtained.The results show that the maximum fatigue damage location is at the connection between the reinforcing rib and the casing,which is consistent with the fracture location in actual working conditions,indicating that the simulation method can provide certain theoretical guidance for structural design.To solve the problem of fatigue fracture,a method of using high damping rubber material shock absorbers for vibration reduction installation is proposed.The re-simulation results show that vibration reduction installation is an effective method to improve the fatigue life of airborne fans.
国家科技期刊平台
NSTL
万方数据
