Theoretical study on the suppression of short pitch rail corrugation induced vibration by rail vibration absorbers under saturated creep forces condition
QIAN Weiji,HUANG Zhiqiang
School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China
Abstract：The installation of rail vibration absorbers is beneficial to prevent the formation and development of the vibration caused by short pitch rail corrugation under certain conditions.However, the mechanism of the suppression of corrugation induced vibration by the rail vibration absorber is not clearly known.Based on the viewpoint of friction-induced self-excited vibration of a wheelset-track system due to short pitch rail corrugation, the effects of the rail vibration absorber on suppressing the influence of short pitch rail corrugation were studied.The complex eigenvalue analysis results indicate that the self-excited vibration of wheelset-track system, whose frequency is the same as the inherent frequency of short pitch rail corrugation, can be suppressed effectively after the installation of rail vibration absorbers.Furthermore, the transient dynamic analysis results demonstrate that the vibration intensity of the wheelset-track system and the fluctuation amplitude of the normal contact force between wheel and rail decrease significantly when the rail vibration absorbers were installed on the rail web.Enhancing the connection damping and the stiffness between the rail vibration absorbers and rail web is conducive to suppress the short pitch rail corrugation.
钱韦吉，黄志强. 蠕滑力饱和条件下钢轨吸振器抑制短波波磨的理论研究[J]. 振动与冲击, 2019, 38(14): 68-73.
QIAN Weiji,HUANG Zhiqiang. Theoretical study on the suppression of short pitch rail corrugation induced vibration by rail vibration absorbers under saturated creep forces condition. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(14): 68-73.
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