Simulative Research on the Vibration Characteristics of the Tramcar and the Track

摘要

In mine, the tramcar and the track often vibrate because there are some excitements, such as the surface smoothness of the track and the step at the joint of two tracks and so on. Intensive vibration often causes run-away tramcar accident, and causes the collision of some parts of tramcar. In order to control the vibration,the present paper develops a simulative method based on SIMULINK to analyse the vibration characteristics of the tramcar and the track when the tramcar goes through the step between two tracks. In the present paper, the two degrees of freedom spring-mass-damper model is introduced as the mechanical model of the tramcar. And,the Bernoulli-Euler Beam locating on the continuous and elastic ballast is used as the mechanical model of the track.The tramcar and the track couple each other by the non-linear contact force existing between the tire and the track. The corresponding mathematical models are established based on the mechanical models above. The vertical vibration of the tramcar body and the transversal vibration of the track are simulated dynamically. The response acceleration of the tramcar and the displacement of the track are analysed individually based on the simulation results above. And, the corresponding methods of vibration control are also obtained.