1D25 Differences in the dynamic behavior of half-body and full-body vehicle models on roller rigs under forced vibration(Vehicles-Dynamics)

抄録

One method to evaluate the running stability of railway vehicles is a running test on roller rigs. In this study, we carried out running tests in order to investigate the differences in the dynamic behavior of half-body and full-body vehicle models on roller rigs in frequency response tests with vertical and rolling forced excitations. By means of a vehicle dynamics analysis by computer simulation, we evaluated the influence of the center of gravity of the body on the dynamic behavior of the vehicle. As a result, it was verified that, for both vertical and rolling forced excitations, when the gravity position of body is equal to the center of body, the dynamic behavior of the full-body vehicle model is nearly the same as that of the half vehicle model in the each excited direction. Otherwise, the dynamic behavior of the full-body vehicle model is different to that of the half vehicle model, because of a pitching movement of the body in the case of vertical forced excitations and a rolling and yawing movement of the load frame in the case of rolling forced excitations.