A Survey of Railway Vehicle Dynamics Research

Abstract

This paper presents a survey of the research concerned with the dynamics of single, conventional railway vehicles. Attention is concentrated on analytical research and only that experimental research that has been performed in conjunction with analytical efforts. The often conflicting objectives for railway vehicle suspension design and the research done to understand the design implications of these objectives are discussed.

Dynamic Analysis and Ride Quality Evaluation of Railway Vehicles – Numerical Simulation and Field Test Verification

“…-aF r (8) w h e r e j = 1,2 when i = 1, a n d j = 3,4 when i = 2; the dot indicates differentiation with respect to time variable t; m w is the mass of wheel-set; m B is the mass of bogie; I Wx , I Wy and I Wz are the roll, spin and yaw moment-of-inertia of the wheel-set, respectively; Vis the forward speed of the vehicle; r 0 is the nominal rolling radius of the wheel-set; C px , C py , and Cpzare the longitudinal, lateral and vertical damping of the primary suspension; C ry is the lateral rail damping; C rz is the vertical rail damping; m B is the mass of bogie; λ is the conicity of wheel; K v is the lateral rail stiffness; K rz is the vertical rail stiffness; K px , K m and K pz are the longitudinal, lateral and vertical stiffness of the primary suspension; l B1 is the half distance between two wheel-set centers; h B1 is the vertical distance from the center of the bogie to the primary suspension; d m is the half primary suspension space; d w 1is the other half of primary suspension space; a is one half of the track gauge; F r is the flange contact force;f11,f12,f22 andf 3 …”

Wheel/rail interface management in heavy haul railway operations—applying science and technology

“…In 1974, Law and Cooperrider published a comprehensive survey of research concerned with the dynamics of a single wheelset [127].…”

Active Control Techniques for Improvement of Rail Vehicle Lateral Dynamic Performance

“…The measured in'put signal is given to an analog computer model of the differential equations of the bogie. The response of this model is then compared with the recorded motions [2]. By adjusting the parameters of the analog model, the difference between the theoretical and the experimental displacements of the bogie can be minimized.…”