空气弹簧失气后地铁车辆动力学性能研究
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摘要
为了研究空气弹簧失气对地铁车辆动力学性能的影响,根据车辆系统动力学和非线性接触理论,建立了地铁车辆非线性动力学模型和空气弹簧失气状态下的黏滑接触力元模型,分析了地铁整车空气弹簧失气状态下地铁车辆的临界速度、轮轴横向力、轮轨横向力、脱轨系数、轮重减载率和平稳性指标并与空气弹簧正常状态进行了对比。结果表明:空气弹簧失气会使地铁车辆的临界速度降低,会使地铁车辆的脱轨系数、轮重减载率、横向平稳性和垂向平稳性明显增大,并且空簧失气对脱轨系数和垂向平稳性的影响尤为显著,因此必须密切关注空气弹簧的状态以保证地铁车辆平稳安全运行。
In order to study the influence on dynamic performance of metro vehicle during the air loss of air spring, the nonlinear dynamic model of metro vehicles and the stick-slip contact force model of air spring in the state of air loss were established. And the critical speed, derailment coefficient, lateral wheelset force,wheel rail lateral force,wheel unloading rate and Sperling value of the metro vehicle in the normal state of the air springs and the air loss of the whole vehicle air spring were calculated and compared. The results show that the critical speed of the metro vehicle is reduced, and the derailment coefficient, the wheel unloading rate, the lateral wheelset force and wheel rail lateral force, and the lateral and vertical Sperling value of the metro vehicle increases obviously when air spring loses air. Since the derailment coefficient and vertical Sperling value are affected significantly, the state of the air spring deserves more attention to ensure the smooth and safe operation of the metro vehicle.
In order to study the influence on dynamic performance of metro vehicle during the air loss of air spring, the nonlinear dynamic model of metro vehicles and the stick-slip contact force model of air spring in the state of air loss were established. And the critical speed, derailment coefficient, lateral wheelset force,wheel rail lateral force,wheel unloading rate and Sperling value of the metro vehicle in the normal state of the air springs and the air loss of the whole vehicle air spring were calculated and compared. The results show that the critical speed of the metro vehicle is reduced, and the derailment coefficient, the wheel unloading rate, the lateral wheelset force and wheel rail lateral force, and the lateral and vertical Sperling value of the metro vehicle increases obviously when air spring loses air. Since the derailment coefficient and vertical Sperling value are affected significantly, the state of the air spring deserves more attention to ensure the smooth and safe operation of the metro vehicle.
引文
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[2] TOYOFUKU K,YAMADA C,KAGAWA T,et al. Study on dynamic characteristic analysis of air spring with auxiliary chamber[J].JSAE Review,1999,20(3):349-355.
[3]高红星,池茂儒,朱旻昊,等.空气弹簧模型研究[J].机械工程学报,2015,51(4):108-115.
[4]池茂儒,高红星,张卫华,等.基于辅助空间的空气弹簧非线性模型[J].中国铁道科学,2014,35(3):83-89.
[5]罗仁,曾京,邬平波.空气弹簧对车辆曲线通过性能的影响[J].交通运输工程学报,2007,7(5):15-18.
[6]吴兴文,池茂儒,朱旻昊,等.空气弹簧模型对铁道车辆动力学性能的影响[J].交通运输工程学报,2013,13(2):55-59.
[7]高浩,罗仁,池茂儒,等.车辆系统空气弹簧失气安全性分析[J].交通运输工程学报,2012,12(7):60-63.
[8]高浩,罗仁,池茂儒,等.车辆系统空气弹簧失气过程动力学分析[J].铁道车辆,2013,51(7):1-4.
[9]刘丽,张卫华,梅桂明,等.铁道车辆空气弹簧漏气故障分析[J].铁道车辆,2015,53(9):1-4.
[10]杨飞,池茂儒,郭文浩,等.空气弹簧支撑控制模式对车辆曲线通过性能的影响[J].机械,2011,38(8):1-5.
[11]赵旭东,胡定祥,包学海.铁道车辆空气弹簧控制方式的研究[J].铁道车辆,2013,51(2):8-11.
[12]严隽耄,付茂海.车辆工程[M].北京:中国铁道出版社,2012:80.
[13]罗仁,石怀龙.铁道车辆系统动力学及应用[M].成都:西南交通大学出版社,2018:205-206.