摘要
为研究某中低速磁浮轨道巡检车的动力学特性,搭建了其动力学模型,对车辆在直线轨道运行过程进行了仿真计算及工程试验,对比了垂向、横向振动加速度的时域、频谱特性,发现仿真结果与试验结果相符,验证了动力学模型的有效性.研究了不同车辆速度下的垂向平稳性,发现车辆速度超过25 km/h时垂向平稳性变差.通过改变车架与车体间减振器的刚度参数,并进行动力学计算仿真,结果表明新的减振器参数对车辆垂向平稳性有较大改善,为该中低速磁浮轨道巡检车提速改进提供参考.
In order to study the dynamic characteristics of the medium and low speed maglev track inspection vehicle,a dynamic model was built.In this study,the simulation calculation and engineering test of the vehicle running on the straight track were carried out,and the time domain and frequency spectrum characteristics of vertical and transverse vibration acceleration were compared.The simulation results were consistent with the experimental results,which proves the validity of the dynamic model.The vertical stability of different vehicle speeds was calculated by simulation.It is found that the vertical stability became worse when the vehicle speed exceeded 25 km/h.In order to improve the speed of high-speed inspection of the whole vehicle,the vibration damper between the frame and the vehicle body was re-selected,and the dynamic calculation was carried out according to its stiffness curve.The results show that the new damper parameters have a great improvement on the vertical stability of the vehicle,which can be used to improve the speed of the medium and low speed maglev track inspection vehicles.
作者
朱震寰
ZHU Zhenhuan(China Railway Construction Heavy Industry Co.Ltd.,Changsha Hunan 410100,China)
出处
《铁道建筑技术》
2020年第9期17-21,25,共6页
Railway Construction Technology
基金
中国铁建重工集团科技研究开发项目(2018-GD-09)。
关键词
中低速磁浮
轨道巡检车
动力学
平稳性
medium and low speed maglev
track inspection vehicle
dynamics
stationarity
