DAI Huan-yun. Choosing method of unloading velocity of hydraulic damper for railway vehicles[J]. Journal of Traffic and Transportation Engineering, 2008, 8(4): 11-15.
Citation: DAI Huan-yun. Choosing method of unloading velocity of hydraulic damper for railway vehicles[J]. Journal of Traffic and Transportation Engineering, 2008, 8(4): 11-15.

Choosing method of unloading velocity of hydraulic damper for railway vehicles

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  • Author Bio:

    DAI Huan-yun(1966-), male, researcher, PhD, +86-28-86466616, daihuanyun@163.com

  • Received Date: 2008-02-21
  • Publish Date: 2008-08-25
  • In order to accurately choose the unloading velocity of hydraulic damper for railway vehicle, a 2σ method was proposed.The relative velocity of the damper was obtained by test and dynamics simulation, and probability statistical analysis, parameter estimation and probability distribution inspection were processed.Based on the normal distribution feature of the relative velocity, the 2σ value of the relative velocity was taken as the unloading velocity.The simulation result indicates that 95% of low frequency vibrations are damped, and 5% of high frequency vibrations are filtered by using the damper with the unloading velocity determined by the method.

     

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