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以直线电机地铁系统的特点和动力学特征为依据,通过建立直线电机地铁系统横、垂向车辆—轨道耦合动力学仿真模型,计算了不同的轨道结构形式(长枕埋入式与板式)和不同板下支承刚度和阻尼情形下,直线电机车辆与轨道结构的动力响应,并进行了对比分析。结果表明,长枕埋入式轨道结构的车体垂向加速度略大于板式轨道,而板式轨道的钢轨横向加速度以及钢轨垂向位移则要略大于长枕埋入式,板下阻尼值的增大有利于轨道板减振,板下刚度对轮轨力、钢轨位移和电机气隙影响较小,当板下刚度增加时,轨道板的位移值变小但轨道板的加速度值变大。
Based on the characteristics and dynamics characteristics of the linear motor metro system, the different rail structure forms (Pillow and Pillow) and The dynamic response of the linear motor vehicle and the track structure under the different support stiffness and damping conditions is compared and analyzed. The results show that the longitudinal acceleration of the car body with long sleeper buried track structure is slightly larger than that of the slab track, while the rail lateral acceleration of the rail track and the rail vertical displacement are slightly larger than that of the long sleeper. The increase of the damping value under the slab Which is beneficial to the damping of the track slab. The rigidity of the slab has little effect on the wheel-rail force, the rail displacement and the motor air gap. When the rigidity of the slab increases, the displacement of the track slab becomes smaller but the acceleration value of the track slab becomes larger.