Analytical Research of Yaw Damper Damping Matching for High-speed Train

Yu, Yuewei

doi:10.3901/jme.2018.02.159

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…Here, α is a weighting factor, and its value can be determined according to the importance of each subtarget, α ∈ [0, 1]. Note that, in order to meet the needs of the engineering and improve the design efficiency, the golden section method [21] can be used to let α = 0.618.…”

Section: Damping Ratio Design Of the Secondary Suspension Systemmentioning

confidence: 99%

Analytical Formulae and Applications of Vertical Dynamic Responses for Railway Vehicles

Yu¹,

Song²,

Zhao³

et al. 2023

sv-jme

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To effectively improve the estimated level of railway vehicles’ vertical dynamic responses and provide a more suitable reference for the selection of its secondary suspension damping parameter, this paper has derived the root mean square values analytical formulae of the car body vertical acceleration, the secondary suspension vertical stroke, and the axle box vertical action force for railway vehicles under the random excitation of the track closer to the actual track characteristics. The correctness of the analytical formulae is verified by testing a real vehicle. Then, according to the analytical formulae derived, an analytical design method of the optimal damping ratio for the secondary suspension system is constructed based on the multi-objective programming and single-objective interval constraint analysis, which can be used to find the best trade-off for conflicting performance indices, such as ride comfort, running smoothness, and running safety, and the influences of the system parameters on the optimal damping ratio are analysed. This research can effectively characterize the vertical vibration response of railway vehicles and provide an effective reference for the initial design of the railway vehicle secondary suspension damping parameter.

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Section: Damping Ratio Design Of the Secondary Suspension Systemmentioning

confidence: 99%

Analytical Formulae and Applications of Vertical Dynamic Responses for Railway Vehicles

Yu¹,

Song²,

Zhao³

et al. 2023

sv-jme

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“…One is to discuss the method of establishing yaw damper models. Yu et al [13] established the yaw damper based on the stability of vehicle motion and curve passing. Alonso et al [14] proposed a new yaw damper model, which verified that the model reduced the calculation cost while ensuring the calculation accuracy.…”

Section: Introductionmentioning

confidence: 99%

Coupling Effects of Yaw Damper and Wheel‐Rail Contact on Ride Quality of Railway Vehicle

Zhang

Ran

Wang

et al. 2021

Shock and Vibration

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The ride quality of the railway vehicle is not only affected by the wheel-rail contact geometry but also by the yaw damper. In order to explore this variation law, an equivalent parameter model of the yaw damper was established based on the internal characteristics of the yaw damper, which is both accurate and efficient. Then, considering the influence of wheel wear and wheel-rail contact geometry, ride quality of the railway vehicle under different parameters of yaw damper and wheel-rail contact parameters was analysed. The results show that the wheel-rail contact points are scattered on the wheel profile after the wheel wears out, and the equivalent conicity also tends to increase with the increasing operating mileage. The distribution of ride quality space is sensitive to the change of equivalent conicity. In the low equivalent conicity area, the expansion rate of excellent ride quality space is faster. In the high equivalent conicity area, the expansion rate of qualified ride quality space is faster. Appropriate additional stiffness which is oil stiffness in parallel with structural damping in the equivalent parameter model of the yaw damper can improve the vehicle ride quality. The lateral ride quality is influenced obviously with the condition of the damping of the yaw damper being less than 440 kN·s·m−1. Properly reducing the joint stiffness of the yaw damper could reduce the influence of characteristic parameters of the yaw damper and equivalent conicity of the wheel-rail contact on vehicle lateral ride quality. The optimized characteristic parameters of the yaw damper are used in the actual vehicle test, and the ride quality is effectively improved.

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Analytical Research of Yaw Damper Damping Matching for High-speed Train

Cited by 2 publications

References 2 publications

Analytical Formulae and Applications of Vertical Dynamic Responses for Railway Vehicles

Analytical Formulae and Applications of Vertical Dynamic Responses for Railway Vehicles

Coupling Effects of Yaw Damper and Wheel‐Rail Contact on Ride Quality of Railway Vehicle

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