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基于车轮-轨道合模型的压力轨道垂直和纵向加速度和传感器安装位置的空间分布的研究
Ke Wang1,2, Kun Zheng3, Youjie Cai1,2
1College of Mechanical and Electrical Engineering, Qiqihar University, Qiqihar, China.
PloS one
|March 24, 2025
概括
这项研究模拟了火车引起的轨道振动加速,识别了敏感区域和最佳的传感器放置. 研究结果表明,铁路腰部非常适合检测振动能量,增强轨道监控.
科学领域:
- 机械工程 机械工程
- 铁路工程 铁路工程是指铁路工程.
- 振动分析 振动分析
背景情况:
- 火车通过会产生很大的轨道振动,影响基础设施和乘客舒适度.
- 了解轨道振动加速的空间分布和特征对于结构健康监测至关重要.
研究的目的:
- 为了研究火车通过过程中轨道振动加速的基本参数和敏感区域.
- 确定最佳的传感器位置,以准确监测铁路轨道的振动.
主要方法:
- 开发了一种车辆-轨道动态有限元模型,结合了车轮-轨道合动态.
- 轨道振动加速度是使用动态模型在250公里/小时的速度计算的.
- 实验模式分析是在使用脉冲激发的无弹轨道测试平台上进行的.
主要成果:
- 在轨道沿线的纵向和纵向加速中观察到显著的空间分布特征.
- 平方根平均值有效地代表了轨道跨度总体的振动,而值有助于分析轨道振动.
- 加速度计对轨道头外的振动能量敏感,但实际安装具有挑战性,可能会损害安全.
结论:
- 轨道的腰部被确定为振动检测最合适的位置.
- 这项研究为改善轨道监控系统和确保铁路安全提供了宝贵的见解.
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