【摘要】 为开发600 km/h高速磁浮新型轨道梁结构,须研究轨道梁横向刚度对磁浮系统横向耦合振动的影响。基于多刚体动力学、比例-微分(PD)控制算法、模态叠加法,开发了列车-控制器-轨道梁横向耦合振动数值仿真程序,考虑轨道不平顺和风致横向荷载的作用,分别对12种轨道梁刚度的系统耦合振动进行了数值模拟。结果表明,当刚度比大于0.42时,刚度变化对系统振动响应没有显著影响;风致横向荷载会增大轨道梁横向振动及车体的摆头运动,使列车前后端部电磁铁磁浮间隙波动幅值增加;与轨道不平顺相比,风致横向荷载是主要的激振因素。更多还原

【Abstract】 In order to develop a new type of track girder structure for 600 km/h high speed maglev system,the influence of guideway girder transverse stiffness on the transverse coupling vibration of maglev system must be studied.Based on multi-rigid body dynamics,proportional-differential(PD)control algorithm and modal superposition method,the numerical simulation program of train-controller-guideway girder transverse coupling vibration was developed.Considering the effects of track irregularity and wind-induced transverse load,the system coupling vibration of 12 kinds of guideway girder stiffness was numerically simulated respectively. The results show that when the stiffness ratio is greater than 0.42,the stiffness change has no significant effect on the vibration response of the system. The windinduced transverse load will increase the transverse vibration of guideway girder and the swing movement of vehicle,and increase the fluctuation amplitude of electromagnet maglev gap at the front and rear ends of the train. Compared with track irregularity,wind-induced transverse load is the main excitation factor.更多还原