Abstract
Recent lightweight railway vehicles tend to express complex vibration motion such as roof and floor vibrate out of phase. Simple beam model cannot be applied to the case and it is needed to treat the carbody as three-dimensional structure (Box-type structure). In this paper, an analytical method is proposed to investigate vibration modes and responses of lightweight high-speed railway vehicles. The carbody is modeled as box-type structure, which consists of combination of plates and beams. The connecting condition of each components is satisfied by introducing artificial springs at their joints. The truck model contains the effect of the excitation input through traction devices and anti-yaw damper, and multiple input from right and left axle box is taken into consideration. Numerical results are compared to the measured data to examine the validity of the method.
