Dynamic Property Analysis of Rubber Absorber in Rail Fastenings of Different Force Condition
This paper studies the dynamic property of rubber absorber in rail fastening by electro-hydraulic testing machine.Two different types of rail fastening are tested.In one fastening the rubber component is in compressed condition (RCRF).While in another the rubber is in sheared (RSRF).A nonlinear dynamic model of rubber absorber in rail fastening is proposed.The model parameters are obtained by the least square method.The accuracy of the obtained model is verified by measured result.The two results are in good agreement.The dynamic stiffness and damping are analyzed, and the results show that dynamic stiffness and damping are closely related to the frequency and amplitude of excitation.Nonlinear characteristic becomes greater with increasing excitation amplitude for the both rail fastenings.For different excitation frequency, the vibration reduction effect of RSRF is more stable than that of RCRF.
Rubber absorber Rail fastening Stiffness Damping Amplitude Frequency
Shu Wei Wang Yan Yun Luo Li Li Yan Liu
Railway & Urban Mass Transit Research Institute,Tongji University,Shanghai,China,201804
国际会议
上海
英文
877-880
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）