Fatigue Analysis of Bolted Connections Under Random Vibration
Most of the key structures of the motor controller are connected by bolts,and the connecting structure is the weak part of the whole structure.In the vibration condition,the connecting structure is prone to stress concentration,fatigue fracture and other problems.Therefore,connecting structure are particularly important in the motor controller.The fatigue failure of bolt connection will affect the overall reliability of the equipment.In order to meet this demand,the random vibration fatigue analysis of the bolt connection structure of the motor controller is carried out.it the three interval method based on Gaussian distribution and Miner linear cumulative damage theory proposed by Steinberg is used to calculate the fatigue life of the bolt structure according to the stress amplitude.It is found that the fatigue life of the original structure can not meet the requirements.The simulation results of workbench show that the proposed method is feasible to calculate the fatigue life of the structure under random vibration.
NETL
NSTL
万方数据
维普
