Abstract
In order to study the relation between the velocity of moving load and the rail deformation, a mechanical model about rail elastic support was built for a existing wheel/rail system monitoring equipment's physical model. Combining the boundary conditions and load type, the oscillation equation of rail mechanical model was solved via Vibration superposition method. Analysis the dynamic response of rail under different moving load range from 40km/h to 200km/h by MATLAB.The law of the relation between rail deformation and the velocity of moving load was got. That is the deformation of rail decrease when the velocity of the moving load increase.
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