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首页> 外文期刊>Journal of Mechanical Science and Technology >The influence of lateral shock absorber valve parameters on vehicle dynamic performance
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The influence of lateral shock absorber valve parameters on vehicle dynamic performance

机译：横向减震阀参数对车辆动态性能的影响

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摘要

The shock absorber is important for improving train dynamics characteristics, and its valve parameters determine its performance and also directly affect the train dynamics characteristics. Hydraulic control model of lateral shock absorber is established by using parametric modeling method in Easy5, and CRH2 trailer model is constructed in VI-Rail. Calculation result of shock absorber model's speed characteristic is embedded into the vehicle model. The accuracy of the vehicle model is verified by a real track-test, and numerical analysis is done about the influence of various parameters on vehicle dynamics performance. The research results show that critical velocity and stability index increase with the increase of damping aperture and through-flow aperture. One-way valve aperture of bottom valve and one-way valve aperture of piston have little influence on those performance. As spring stiffness increases in the range of 800-2000 N/cm, critical velocity increases and stability index decreases, and its influence is little if spring stiffness is beyond this scope. As preload force of spring increases in the range of 100-250 N, critical velocity increases and stability index decreases, and its influence is also little if the preload force of spring is beyond this scope.
机译：减震器对于改善列车动力学特性很重要，其减振器的气门参数决定其性能并直接影响列车动力学特性。利用Easy5中的参数化建模方法建立了横向减震器的液压控制模型，并在VI-Rail中构建了CRH2挂车模型。减震器模型的速度特性的计算结果被嵌入到车辆模型中。通过真实的轨道测试验证了车辆模型的准确性，并对各种参数对车辆动力学性能的影响进行了数值分析。研究结果表明，临界速度和稳定性指数随阻尼孔和通流孔的增加而增加。底阀的单向阀孔和活塞的单向阀孔对这些性能影响很小。当弹簧刚度在800-2000 N / cm的范围内增加时，临界速度会增加，稳定性指数会降低，并且如果弹簧刚度超出此范围，其影响将很小。当弹簧的预紧力在100-250 N的范围内增加时，临界速度增加，稳定性指数降低，并且如果弹簧的预紧力超出此范围，其影响也很小。

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