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- W2390298051 abstract "In order to investigate the effect of track support failure at tangent track on dynamic response of vehicle,a non-symmetrical vehicle-track coupling dynamic model is established,in which the rails are assumed as Timoshenko beams resting on the discrete sleepers.The failure situation of track components under the rails is simulated by abrupt change of track stiffness along the track.The effect of the discrete sleeper support on the coupling dynamics of the vehicle and track is taken into consideration by the backward moving sleepers.The creepage formulas of wheel/rail rolling contact are deduced,in which the vertical and lateral motions of the track are considered.The normal forces of wheel/rail are calculated by Hertzian contact theory and the creep forces are decided by the nonlinear creep theory of Shen et al.The motion equations of the vehicle/track coupling system are solved with the new explicit integration method.Ride comfort of vehicle is evaluated by the Sperling's ride index.Effects of track supports in failure situation on tangent track dynamic response and ride comfort are evaluated in succession from zero to six supports.The numerical results indicate that track support failure greatly affects the dynamic response of the displacements and accelerations of vehicle.When the failure numbers increase,the wheel/rail normal forces,the displacements and accelerations of vehicle components increase quickly,and Sperling's ride index,including the ride quality and ride comfort,increase linearly but the value is rather small." @default.
- W2390298051 created "2016-06-24" @default.
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- W2390298051 date "2007-01-01" @default.
- W2390298051 modified "2023-09-24" @default.
- W2390298051 title "Effect of Track Support Failure on Dynamic Responses and Riding Comfort of Vehicle System" @default.
- W2390298051 hasPublicationYear "2007" @default.
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