• ISSN 0258-2724
  • CN 51-1277/U
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Volume 27 Issue 2
Apr.  2014
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Article Contents
Journal of Southwest Jiaotong University  > 2014  >  27(2): 291-296.
YANG Mingliang, LI Renxian, DING Weiping, ZHANG Song, DING Wei. Influence of Valves Parameters on Damping Characteristics of Hydraulic Shock Absorber for High-Speed Trains[J]. Journal of Southwest Jiaotong University, 2014, 27(2): 291-296. doi: 10.3969/j.issn.0258-2724.2014.02.016
Citation: YANG Mingliang, LI Renxian, DING Weiping, ZHANG Song, DING Wei. Influence of Valves Parameters on Damping Characteristics of Hydraulic Shock Absorber for High-Speed Trains[J]. Journal of Southwest Jiaotong University, 2014, 27(2): 291-296. doi: 10.3969/j.issn.0258-2724.2014.02.016
shu

Influence of Valves Parameters on Damping Characteristics of Hydraulic Shock Absorber for High-Speed Trains

doi: 10.3969/j.issn.0258-2724.2014.02.016
  • Received Date: 08 Jul 2013
  • Publish Date: 25 Mar 2014
    Abstract
  • A form of hydraulic shock absorber structure widely used for high-speed trains was studied to reveal the quantitative relationship between the damping characteristics of hydraulic shock absorber and valves parameters. The damping force generating mechanism was analyzed using fluid dynamics principle and hydraulic transmission technology. Then, a damping force calculation model was constructed and verified for the recovery stroke, and the influences of valves parameters on damping characteristics of the hydraulic shock absorber for high-speed trains were discussed. The results show that the diameter of the throttle holes was the major factor to impact the shock absorber's damping characteristics before the valves opened, and the damping force changed up to 52.4%. In contrast, the diameter of the recovery hole was the major factor to impact the shock absorber's damping characteristics after the valves opened, and the damping force changed up to 80.1%. According to the conclusion, the performance design and tuning guidelines for high-speed train shock absorbers are proposed.

     

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