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动力稳定装置道床耦合系统动态特性理论模拟与试验研究

李佳奇 王立华 严波

李佳奇, 王立华, 严波. 动力稳定装置道床耦合系统动态特性理论模拟与试验研究[J]. 机械科学与技术, 2021, 40(8): 1186-1192. doi: 10.13433/j.cnki.1003-8728.20200195
引用本文: 李佳奇, 王立华, 严波. 动力稳定装置道床耦合系统动态特性理论模拟与试验研究[J]. 机械科学与技术, 2021, 40(8): 1186-1192. doi: 10.13433/j.cnki.1003-8728.20200195
LI Jiaqi, WANG Lihua, YAN Bo. Theoretical Simulation and Experimental Study of Dynamic Characteristics of Dynamic Stabilization Unit-track System[J]. Mechanical Science and Technology for Aerospace Engineering, 2021, 40(8): 1186-1192. doi: 10.13433/j.cnki.1003-8728.20200195
Citation: LI Jiaqi, WANG Lihua, YAN Bo. Theoretical Simulation and Experimental Study of Dynamic Characteristics of Dynamic Stabilization Unit-track System[J]. Mechanical Science and Technology for Aerospace Engineering, 2021, 40(8): 1186-1192. doi: 10.13433/j.cnki.1003-8728.20200195

动力稳定装置道床耦合系统动态特性理论模拟与试验研究

doi: 10.13433/j.cnki.1003-8728.20200195
基金项目: 

国家自然科学基金项目 51765023

详细信息
    作者简介:

    李佳奇(1995-), 硕士研究生, 研究方向为机械动力学, Richie2008@163.com

    通讯作者:

    王立华, 教授, 博士生导师, kmwanglihua@163.com

  • 中图分类号: TH113.2+2

Theoretical Simulation and Experimental Study of Dynamic Characteristics of Dynamic Stabilization Unit-track System

  • 摘要: 针对动力稳定装置与轨道复杂的耦合特性,基于键合图理论建立动力稳定装置-轨道耦合系统。为更加贴切动力稳定装置的实际工作状态,对动力稳定装置持续作业期间的自由度问题,轮轨间Hertz非线性接触特性与轮轨接触角度问题以及轮轨间间隙传动问题做出具体分析。并结合键合图理论与Euler梁理论建立动力稳定装置与轨道耦合系统完整的键合图模型。经动力稳定车现场作业试验数据计算机仿真结果在时域与频域上对比分析,验证理论模型的正确性,可以被应用于不同激振频率的动力稳定装置动态特性分析。
  • 图  1  动力稳定装置示意图

    图  2  激振装置内部结构示意图

    图  3  动力稳定装置自由度示意图

    图  4  动力稳定装置摆头键合图原理图

    图  5  轮轨接触示意图

    图  6  液压油缸键合图模型

    图  7  钢轨受力示意图

    图  8  钢轨柔性化键合图模型

    图  9  动力稳定车轨道横向耦合系统键合图模型

    图  10  动力稳定车现场试验图

    图  11  实验与仿真时域曲线对比

    图  12  试验仿真频域对比曲线

    图  13  理论模拟与试验加速度幅值对比曲线

    表  1  模型参数

    参数 数值
    钢轨单位长度质量/(kg·m-1) 60.64
    钢轨弹性模量/(N·m-2) 2.059×1011
    钢轨对垂直轴截面惯性矩/m4 0.524×10-5
    钢轨密度/(kg·m-3) 0.786×104
    轨枕质量/kg 237
    单根钢轨扣件间距/m 0.6
    扣件横向刚度/(MN·mm-1) 8.79
    扣件横向阻尼/(N·s·m-1) 1 927.96
    轨枕道砟间刚度/(MN·mm-1) 6×10
    轨枕道砟间阻尼/(N·s·m-1) 3.5×103
    单个动力稳定装置质量/kg 3 500
    动力稳定装置转动惯量/(kg·m2) 5 000
    动力稳定装置走行速度/(km·h-1) 1.5
    动力稳定装置所受下压力/kN 4×60
    动力稳定装置夹持力/kN 6.9
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-01-31
  • 刊出日期:  2021-10-09

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