Analysis of internal flow field of air spring in high-speed EMUs and its effects on air spring dynamic characteristics

被引：0

作者：

Qi, Zhuang ^{[1
]}

Jiang, Lei ^{[1
]}

Liu, Pengfei ^{[2
]}

Shen, Yongjun ^{[1
,2
]}

Miao, Xintian ^{[3
]}

Gu, Xiaohui ^{[2
]}

机构：

[1] College of Mechanical Engineering, Shijiazhuang Tiedao University, Shijiazhuang

[2] State Key Lab of Mechanical Behavior and System Safety of Traffic Engineering Structures, Shijiazhuang Tiedao University, Shijiazhuang

[3] Beijing Rolling Stock Section, China Railway Beijing Group Co., Ltd., Beijing

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2024年 / 43卷 / 19期

关键词：

air spring; dynamic characteristics; flow field analysis; high-speed electric multiple units;

D O I：

10.13465/j.cnki.jvs.2024.19.003

中图分类号：

学科分类号：

摘要：

As an important component in secondary suspension of high-speed electric multiple units, air springs directly affect operational quality of vehicles. How to establish a more realistic air spring model gradually becomes a focus of vehicle dynamic analysis. Here, based on the theory of fluid mechanics, the internal gas equation of air spring was derived, and a fluid-dynamic model of air spring was established based on the dynamic grid theory. The correctness of the model was verified with bench tests. This model was used to explore the calculation method of internal turbulence in air spring system, study stiffness characteristics of air spring under different loads, and further analyze dynamic characteristics of air spring. Effects of structural parameters of air spring system on its vertical characteristics were studied. By calculating Helmholtz resonance frequencies under different structural parameters of pipeline, it was shown that when the excitation frequency of air spring is the same as Helmholtz resonance frequency, damping coefficient of air spring can increase, under different connecting pipe diameters, within the frequency range of 1.0 5.0 Hz, with increase in frequency, dynamic stiffness obviously increases, after frequency is 5. 0 Hz, dynamic stiffness gradually decreases and tends to be horizontal, within the frequency range of 0. 5 5.0 Hz, the smaller the connecting pipe diameter, the larger the damping coefficient and it has a certain degree of hysteresis, after frequency is larger than 10. 0 Hz, damping coefficient tends to be 0; under different connection pipeline lengths, within the frequency range of 1.0 -7.0 Hz, the higher the frequency, the larger the dynamic stiffness, after frequency is 7. 0 Hz, with increase in frequency, dynamic stiffness gradually decreases and tends to be stable, within the frequency range of 1.0 - 9. 0 Hz, the shorter the connection pipeline length, the smaller the damping coefficient of air spring. © 2024 Chinese Vibration Engineering Society. All rights reserved.

引用

页码：19 / 27and36

页数：2717

共 18 条

[1]

Xu X., Shi T., Jiang X., Et al., Modelling and dynamic characteristics of quasi-zero stiffness air suspension system[J], Journal of Vibration and Shock, 40, 24, pp. 205-211, (2021)

[2]

Qi Z., Qiao W., Chen Q., Et al., Research on dynamic modelling and service performance test of air springs for standard locomotives[J], Journal of Vibration and Shock, 39, 11, pp. 129-137, (2020)

[3]

Chen J., Yin Z., Guo K., Et al., Modelling and parameter impact analysis of throttle orifice air damping system [J], Journal of Vibration and Shock, 37, 16, pp. 241-248, (2018)

[4]

Zhang G., Finite element method to study the effect of air spring parameters on transverse characteristics [J], Railway Rolling Stock, 38, 9, pp. 13-16, (2000)

[5]

Wang C., Luo S., Xu Z., Et al., Simulation analysis and experimental verification of lateral instability of high-speed rolling stock frames [J], Journal of Railway, 43, 1, pp. 39-48, (2021)

[6]

Xu X., Zhou K.K., Zou N.N., Et al., Hierarchical control of ride height system for electronically controlled air suspension based on variable structure and fuzzy control theory [J], Chinese Journal of Mechanical Engineering, 28, 5, pp. 945-953, (2015)

[7]

Li F., Fu M., Huang Y., Et al., Characterisation of vehicle air spring dynamics [J], China Railway Science, 5, pp. 92-96, (2003)

[8]

Zhang G., Shen G., Dynamic modelling of air springs with connecting piping[J], Journal of Railway, 4, pp. 36-41, (2005)

[9]

Docquier N., Fisette P., Jeanmart H., Influence of heat transfer on railway pneumatic suspensions dynamics [J], Iavsd Symposium on Dynamics of Vehicles on Roads & Tracks, 122, pp. 129-142, (2009)

[10]

Nieto A.J., Morales A.L., Gonzalez A., Et al., An analytical model of pneumatic suspensions based on an experimental characterization [J], Journal of Sound and Vibration, 313, pp. 290-307, (2008)

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