Abstract
In order to analyze the dynamic responses of rails subjected to distributed moving electromagnetic pressure, the vibration governing equations of rails on viscoelastic support were established based on Winkler foundation beam model. The analytical expression of the vibration response of the rail was deduced by modal superposition method. Taking a typical current excitation as an example, the dynamic responses (such as vibration deflection, velocity, bending stress, and so on) were calculated, and the characteristics along with the critical velocity effects were emphatically analyzed. The influence of support stiffness and damping on the dynamic response of rails were also investigated. The research results can provide a theoretical basis for the design of launcher packaging structure.
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