Simulation of Train-Turnout Coupled Dynamics Using a Multibody Simulation Software

Figure 1

Schematic drawing of the train-track model (not to scale): (a) side view and (b) rear view. : wheelset velocity, : rail bending stiffness, second subscript : left position, : railpad stiffness, second subscript : right position, : railpad damping, second subscript : middle position, : ballast stiffness, subscript : item number, : ballast damping, : carbody mass, : carbody vertical displacement, : carbody mass inertia, : bogie vertical displacement, : bogie mass, : wheelset vertical displacement, : bogie mass inertia, : sleeper mass vertical displacement, : wheelset mass, : carbody lateral displacement, : wheelset mass inertia, : bogie lateral displacement, : fictitious rail mass, : wheelset lateral displacement, : rail mass, : rail (beam) vertical displacement, : rail mass inertia, : rail mass vertical displacement, : sleeper mass, : carbody roll rotation, : sleeper mass inertia, : bogie roll rotation, : secondary suspension stiffness, : wheelset roll rotation, : secondary suspension damping, : sleeper mass roll rotation, : primary suspension stiffness, : carbody mass pitch rotation, : primary suspension damping, : bogie mass pitch rotation, : wheel-fictitious rail contact stiffness, : rail mass pitch rotation, : wheel-fictitious rail contact damping, : sleeper distance, : fictitious rail-rail contact stiffness, and : ballast support distance.

(a)

(b)