In order to understand effect of parameters of rail structure and vehicle speed on wheel-rail force when vehicle crossing curve track, coupling dynamics system with vehicle, rail, sleeper and ballast was constructed by using vehicle-track coupling dynamics theory. Movement differential equations of system were solved by new fast explicit numerical integral method. Different wheel-rail forces were obtained by changing curve superelevation, curve radius and vehicle speed. Results of calculation have shown that increment of curve superelevation will reduce wheel-rail force, and increment of curve radius will reduce attack angle and interaction force of wheel-rail. Maximum of wheel-rail force will occur within certain scope of vehicle speed. These results will provide theory guidance and reference for finding key technology to lower wheel-rail force and reduce rail oblique crack.
Effect of Parameters of Rail Structure and Vehicle Speed on Wheel-Rail Force when Vehicle Crossing Curve Track
Second International Conference on Transportation Engineering ; 2009 ; Southwest Jiaotong University, Chengdu, China
2009-07-29
Conference paper
Electronic Resource
English
Highways and roads , Information technology (IT) , Transportation management , Construction , Freight transportation , Vehicles , Railroad tracks , Curvature , Parameters , Water transportation , Air transportation , Rail transportation , Coupling , Optimization , Public transportation , Traffic management
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