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 suspension system of medium - and low - speed maglev trains, a model of an elevated track beam with variable stiffness is established based on the vector - based finite element method. At the same time, a vehicle system model is established based on Newton's mechanical equations, and the two models are coupled through a controllable suspension electromagnetic force. Taking the mid - span displacement of the track beam, the rotation angle at the beam end, the vibration acceleration and the deviation value of the suspension gap as important indicators, starting from the proposed vehicle - bridge magnetic force coupling model, the vibration response and displacement deformation response laws of the corresponding structural components of the maglev train and the track line are obtained through numerical simulation. Finally, the effectiveness of the proposed magnetic force coupling model is preliminarily verified through a full - scale maglev train field test.

针对中低速磁浮列车悬浮系统,基于向量式有限元法建立可变刚度的高架轨道梁模型,同时基于牛顿力学方程建立车辆系统模型,并通过可控悬浮电磁力将2个模型耦合。以轨道梁的跨中位移、梁端转角、振动加速度以及悬浮间隙偏差值为重要指标,从所提出的车-桥磁力耦合模型出发,通过数值仿真得到磁浮列车及轨道线路相应结构构件的振动响应及位移变形响应规律。最后,通过全尺寸磁浮列车现场试验初步验证所提出的磁力耦合模型的有效性。