摘要
为掌握高速磁浮车辆悬浮电磁铁和悬浮架的弹性变形特性,建立考虑悬浮电磁铁和悬浮架柔性的高速磁浮车辆刚柔耦合动力学模型,仿真分析了5种悬浮电磁铁抗弯刚度和3种平面曲线(曲线半径分别为650 m,1 000 m,4 000 m)条件下悬浮电磁铁和悬浮架的弹性变形。结果表明,悬浮电磁铁在半径1 000m曲线上变形最大,当其抗弯刚度由现有设计值减小50%后,一位悬浮电磁铁的动态整体变形幅值由0.49mm增大到0.82 mm,该值相对于10 mm的额定悬浮间隙而言较大,二位悬浮电磁铁的动态整体变形幅值由0.11 mm增至0.23 mm;增大悬浮电磁铁的抗弯刚度,其动态变形近似线性减小;在缓和曲线上悬浮架跟随轨道扭转而扭转,在缓和曲线中点处扭转角最大,头车一位悬浮架的扭转角总是小于二位悬浮架。整体而言,悬浮电磁铁的抗弯刚度对悬浮架扭转变形影响较小,对一位悬浮架托臂的弹性变形有一定影响,而对二位悬浮架托臂影响甚小。
In order to grasp the elastic deformation characteristics of levitation electromagnet and levitation bogie of high-speed maglev vehicle,a rigid-flexible coupling dynamic model of high-speed maglev vehicle considering the flexibility of levitation electromagnet and levitation bogie was established.The elastic deformation of levitation electromagnet and levitation bogie under the five kinds of levitation electromagnet bending stiffness and three kinds of plane curves(radius is 650 m,1 000 m and 4 000 m) was simulated and analyzed.The results show that the deformation of the levitation electromagnet is the largest on the curve of radius at 1 000 m.When the bending stiffness of the levitation electromagnet decreases by 50% from the existing design value,the dynamic overall deformation amplitude of the first levitation electromagnet increases from 0.49 mm to 0.82 mm,which is larger than the rated suspension clearance of 10 mm,and the overall deformation amplitude of the second levitation electromagnet increases from 0.11 mm to 0.23 mm.With the increase of the bending stiffness of the levitation electromagnet,the dynamic deformation decreases approximately linearly.The levitation bogie twists along the track on the mitigation curve,and the torsion angle is the largest at the midpoint of the mitigation curve.The torsion angle of the first levitation bogie is always less than that of the second levitation bogie.Overall,the bending stiffness of the levitation electromagnet has little effect on the torsional deformation of the levitation bogie,and has a certain effect on the elastic deformation of the first levitation bogie bracket,and has little effect on the second levitation bogie bracket.
作者
和风
冯洋
佟来生
舒瑶
赵春发
HE Feng;FENG Yang;TONG Laisheng;SHU Yao;ZHAO Chunfa(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu,Sichuan 610031,China;CRRC Zhuzhou Locomotive Co,Ltd,Zhuzhou,Hunan 412001,China;State Key Laboratory of Heavy Duty AC Drive Electric Locomotive Systems Integration,Zhuzhou,Hunan 412001,China)
出处
《机车电传动》
北大核心
2022年第4期1-8,共8页
Electric Drive for Locomotives
基金
国家重点研发计划项目(2016YFB1200601,2016YFB1200602-15)
湖南省创新型省份建设专项。
关键词
磁浮列车
悬浮架
电磁铁
曲线通过
刚柔耦合动力学
弹性变形
仿真
maglev train
levitation bogie
electromagnet
curve negotiation
rigid-flexible coupled dynamics
elastic deformation
simulation
