基于向量式有限元法的磁浮列车磁力耦合系统建模与数值分析

For the levitation system of medium-low speed maglev train, an elevated rail beam model with variable stiffness based on vector form intrinsic finite element method and a vehicle system model based on Newtonian mechanics equations were established. The two models were coupled by controllable levitation electromagnetic force. Then, the mid-span displacement of rail beam, the angle of beam end, the vibration acceleration and the deviation of suspended airgap were taken as the important indexes. The vibration response and the displacement deformation response of the corresponding structural component of maglev train and track line were obtained through numerical simulation based on the proposed coupled model of vehicle-bridge magnetic force. Finally, the effectiveness of the proposed magnetic coupling model was verified through the field experiment of full-size maglev train preliminarily.