Vibration Damping of Subway Resilient Wheel on Fastening Clips in Rail Corrugation Section

doi:10.3901/JME.2025.08.240

Abstract

Abstract: The resonance of the fastening clips stimulated by the short-wavelength rail corrugation is an important cause of the fatigue fracture of the fastening clips in subway track. The resilient wheel is a new type of vibration damping wheel, and its damping effect on the fastening clips is not clear. Based on the finite element model of wheel-rail-fastener and the linear theory of cumulative fatigue damage in conjunction with field tests, the vibration damping effect of subway resilient wheels on fasteners in the corrugated section is investigated. The results show that the vibration acceleration of fastening clips is reduced by about 50% compared with the conventional wheel when the resilient wheel rolls over a corrugated rail with wavelength of 31.5 mm and at a speed of 70 km/h. The resilient wheel reduces the wheel-rail impact energy caused by rail corrugation, which is an important reason for the vibration damping effect of the fastening clips when the resilient wheel is used. For the short-wavelength corrugation section of the subway, the fatigue life of the fastening clips when using the resilient wheel is increased by about 375% than that when using the conventional wheel, which can effectively reduce the fatigue damage of the fastening clips. The research results provide scientific support for the optimization design of the resilient wheel and the maintenance of subway track.

Key words: resilient wheel, short wave-length corrugation, fastening clips, resonance, fatigue failure

CLC Number:

U211

FU Haoning, GUAN Qinghua, WANG Peng, WEN Zefeng. Vibration Damping of Subway Resilient Wheel on Fastening Clips in Rail Corrugation Section[J]. Journal of Mechanical Engineering, 2025, 61(8): 240-249.

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