소음진동 (Journal of KSNVE)

한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
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레일의 상하방향 불규칙성에 의한 차륜과 레일의 동 접촉력

Dynamic Wheel/Rail Contact Force due to Rail Irregularities

  • 발행 : 1998.08.01
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초록

An analytical method has been developed to estimate the dynamic contact force between wheel and rail when trains are running on rail with vertical irregularities. In this method, the effect of Hertzian deformation at the contact point is considered as a linearized spring and the wheel is considered as an sprung mass. The rail is modelled as a discretely-supported Timoshenko beam, and the periodic structure theory was adopted to obtain the driving-point receptance. As an example, the dynamic contact force for a typical wheel/rail system was analysed by the method developed in this research and the dynamic characteristics of the system was also discussed. It is revealed that discretely-supported Timoshenko beam model should be used instead of the previously used continuously-supported model or discretelysupported Euler beam model, for the frequency range above several hundred hertz.

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참고문헌

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  11. 한국과학재단 '96 특정 기초연구(95-0200-15-01-3) 제 2 차년도 중간보고서 저소음 철도차량설계를 위한 핵심 기본기술연구 김정태(외 4인)