In view of the problem of integral train operation with micro fatigue fracture,a method of optimal design based on AN-SYS finite element analysis is proposed.The damage mechanism of the whole hanging string is analyzed by finite element calculation,and then the design is optimized based on the original hanging string.That is,a vibration damping device is added to the lifting string to reduce the vibration capacity caused by the pantograph,reduce the bending capacity of the lifting string and finally use the dynamic fatigue test to verify the feasibility of the proposed method.The results show that the simulation error of the optimized contact line is controlled within 5％.It shows that the proposed method can effectively reduce the fatigue damage of the hanging string and ensure that the pantograph and the contact line can complete a good flow,increase the fatigue life of the hanging string,and improve the op-eration safety of the whole catenary system,so as to further improve the stability and safety of the train operation.
关键词
有限元分析/接触网/整体吊弦/受电弓/减振装置
Key words
finite element analysis/overhead enary/integral hanging string/pantograph/vibration damping device
维普
万方数据