Influence of the Primary Suspension Damping on the Ride Comfort in the Railway Vehicles

Abstract:

The paper features the results of a numerical study regarding the influence that the damping reduction in the primary suspension of the rail vehicle, due to the defect in a damper, has on the ride comfort. The study is based on model of rigid-flexible coupled vehicle, with seven degrees of freedom, where the carbody is modelled as an Euler-Bernoulli type equivalent beam. The results of the numerical simulations show the power spectral density of carbody vertical accceleration and the ride index comfort calculated in three carbody reference points - at the centre and against the bogies, for various cases of reduction in the damping constant of the primay suspension in the axle, compared to the reference value. As a function of velocity, due to the geometric filtering effect, the damping reduction has contrary effects upon the level of vibrations in the carbody and upon the ride comfort.

• Periodical: Materials Science Forum (Volume 957)
• Pages: 53-62
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.957.53
• Online since: June 2019
• Authors: Madalina Dumitriu*, Dragoş Ionuţ Stănică
• Keywords: Fault Damper, Geometric Filtering Effect, Railway Vehicle, Ride Comfort, Suspension

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