...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Mechanical Science and Technology >Shaking analysis of high-speed train's carbody when cross lines
【24h】

Shaking analysis of high-speed train's carbody when cross lines

机译：横线时高速列车车身的摇晃分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The high-speed train will exhibit different vibration characteristics when running on different lines. When the equivalent conicity of the wheel rail profile is larger, the critical speed of the vehicle will decrease, which will lead to the lateral instability of bogie and cause the abnormal vibration problem of carbody. This paper firstly analyzes the causes of high-speed train's body shaking when cross lines, through the test acceleration analysis and equivalent conicity analysis of measured wheel profile and rail profile, found that the main reason is equivalent conicity increases when the vehicle cross to another line and change of the wheel rail contact relationship. And establish the train model with the Simpack software, and the phenomenon of body shaking is reappeared by using the measured tread and rail profile, and the vibration of the carbody after crossing the line is obvious under the dominant frequency of 7.1 Hz. And proposes two optimization schemes: decreases the distance between backs of the wheel flanges and the optimization of suspension parameters. The simulation results show that the distance between backs of the wheel flanges decrease can effectively reducing the equivalent conicity, the equivalent conicity of 1353 mm, 1352 mm and 1351 mm were calculated respectively, and when the distance between backs of the wheel flanges was reduced by 1 mm and 2 mm, there was a significant decrease of equivalent conicity. The distance between backs of the wheel flanges decrease of 1 mm and 2 mm effectively reducing the equivalent taper, then the bogie lateral acceleration was reduced by 22.4 % and 30.7 %, the lateral acceleration of carbody is decreased by 8.87 % and 24.6 %. At the same time, optimize the anti-yaw vibration absorber stiffness and node positioning stiffness, increasing the longitudinal positioning stiffness and anti-yaw vibration absorber stiffness can effectively reduce the lateral acceleration of the bogie and carbody. However, the selection of this parameter should be combined with other dynamic indexes and wheel wear.
机译：在不同的线路上运行时，高速列车将表现出不同的振动特性。当车轮轨道轮廓的等效性较大时，车辆的临界速度将降低，这将导致转向架的横向不稳定性，并导致车体的异常振动问题。本文首先分析了高速列车的身体摇动的原因，通过测量轮廓和轨道轮廓的测试加速度分析和等效性连同性分析，发现主要原因是当车辆交叉到另一条线时增加和轮轨接触关系的变化。并建立了用Simpack软件建立火车模型，通过使用测量的胎面和轨道轮廓重新出现身体摇动现象，并且在交叉线后的车身的振动在7.1Hz的主导频率下显而易见。并提出两个优化方案：减少车轮法兰背面的距离和悬架参数的优化。仿真结果表明，车轮凸缘的背面之间的距离可以有效地减小等效性连续，分别计算了1353mm，1352mm和1351mm的等效优势，并且当车轮凸缘的背面之间的距离减小时1毫米和2毫米，相当于性的显着降低。车轮凸缘之间的距离减小1mm和2mm有效地减少了等同的锥度，然后转向架横向加速度降低了22.4％和30.7％，车胞的横向加速度降低了8.87％和24.6％。同时，优化抗偏航振动吸收器刚度和节点定位刚度，增加纵向定位刚度和抗偏航振动吸收器刚度可以有效地减少转向架和车身的横向加速度。但是，该参数的选择应与其他动态索引和车轮磨损相结合。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号