开发用于使用频率比测试在磁力列车中的起力分布的简化方法
Wen Ji1, Weihua Ma1, Shihui Luo1
1State Key Laboratory of Rail Transit Vehicle System, Southwest Jiaotong University, Chengdu 610031, China.
Sensors (Basel, Switzerland)
|September 14, 2024
概括
简化磁铁列车的力量作为集中的负载准确地预测桥梁动态. 这种方法有助于分析共振和计算磁铁列车桥系统的临界速度.
科学领域:
- 土木工程 土木工程是指土木工程.
- 机械工程 机械工程
- 应用物理 应用物理
背景情况:
- 磁悬浮车辆通过悬浮力均地分配负载.
- 评估磁铁轨列车-桥梁动态需要了解力分布.
- 将分布力简化为集中力是一个关键的建模技术.
研究的目的:
- 从理论上推导并从数值上模拟桥梁动态响应在集中的磁悬浮力下.
- 为了研究强力集中对磁铁列车桥系统动态的影响.
- 为了验证模拟模型使用实验数据从上海磁铁高速公路线.
主要方法:
- 在单一恒定力下的桥梁动态的理论推导.
- 在各种光束类型上移动单个和多个集中力的数值模拟.
- 实验验证使用高精度位移和加速传感器在上海电磁高速公路线上.
主要成果:
- 一个频率比率有效地分析了磁电列车的共振条件和关键速度.
- 将磁铁轨悬浮力简化为四个集中的群体,可以提供足够的准确性.
- 在简化集中力下的动态反应与分布式负荷下的动态反应非常接近.
结论:
- 集中力模型是分析磁铁列车桥动态的有效简化.
- 使用频率比率方法可以进行共振和临界速度计算.
- 实验验证证了对高速磁悬浮应用的简化力模型的准确性.
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