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首页> 外文会议>Proceedings of the Thirteenth international conference on civil, structural and environmental engineering computing >Comparison of the Linear and Nonlinear Analyses of the Stabilization of the Hunting Motion of Railway Vehicles
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Comparison of the Linear and Nonlinear Analyses of the Stabilization of the Hunting Motion of Railway Vehicles

机译：铁路车辆行进运动稳定度线性和非线性分析的比较

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摘要

Axle hunting is a coupled lateral and yaw self oscillatory motion which is largelyrndetermined by wheel–rail contact geometry. The stability of this motion is anrnimportant dynamic problem that determines the maximum operating speed ofrnrailway vehicle. To improve the stability performances, without increasing the railwheelrninteraction forces above safety limits, elastic joints and dissipative devices arernused to connect the wheelset to the bogy frame. The influence of passive linear andrnnon-linear dissipative and elasticity forces on the hunting motion stability of arnwheelset with elastic joints is studied in this paper. The results of numericalrnsimulations show that use of linear elasticity and damping in the system, can lead torna certain increase of critical speed, still limited by safety, wear and damagernrequirements. By using a nonlinear special type of elasticity and dampingrncharacteristics, depending on both relative velocity and displacement betweenrnwheelset and bogy frame, it is shown that the hunting motion cannot becomernunstable, even for very large values of vehicle speed.
机译：轮轴摆动是横向和偏航的自激振动的耦合，主要由轮轨接触几何形状决定。该运动的稳定性是重要的动态问题，其决定了铁路车辆的最大运行速度。为了提高稳定性能，而又不将轮辋相互作用力增加到安全极限以上，则使用弹性接头和耗散装置将轮对连接至车架。研究了被动线性和非线性耗散和弹性力对带有弹性接头的轮对的波动运动稳定性的影响。数值模拟结果表明，在系统中使用线性弹性和阻尼可以导致临界速度的一定提高，但仍受安全性，磨损和损坏要求的限制。通过使用非线性特殊类型的弹性和阻尼特性，取决于轮对和转向架之间的相对速度和位移，表明即使对于很大的车速值，摆动运动也不会变得不稳定。

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