Research on the Influence of Gear Eccentricity on the Dynamic Performance of Rack Railway Vehicle
In order to study the influence of gear eccentricity on the dynamic performance of the rack railway vehicles,based on the theory of gear and rack transmission and vehicle dynamics,a multi-body dynamic model of the rack railway vehicle is established using SIMPACK software.The dynamic characteristics of gears across different eccentricities,as well as the straight-line operation stability index and curve operation safety index of rack railway vehicles are studied.The simulation results show that the meshing impact between the gear and rack gradually increases with the increase of gear eccentricity,thereby exacerbating the vibration of the vehicle body,which results in an increase in the acceleration of the vehicle body vibration and stability index when the rack railway vehicle runs in a straight line.However,compared with lateral vibration,the vertical vibration of the vehicle body is more significantly affected by gear eccentricity.In addition,with the increase of gear eccentricity,the derailment coefficient and rate of the wheel load reduction of rack railway vehicle passing through the curve also increase.
rack railway vehiclegear and rackgear eccentricitydynamic performance
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