On the Assessment of the Vertical Vibration Behaviour of a Railway Vehicle
Journal Title: Romanian Journal of Acoustics and Vibration - Year 2011, Vol 8, Issue 2
Abstract
The paper deals with the assessment of the vertical vibration behaviour of a railway vehicle due to the random irregularities of the track. This issue is important to predict the running behaviour of the vehicle. Also, it is interesting from the view point of improving the vehicle design so as to increase safety and comfort of the railway transportation. The mechanical model of a railway vehicle consisting of a three rigid bodies – the car body and the two suspended masses of the bogies – is taken into account. The two levels suspension of the vehicle is modeled using four Kelvin-Voigt systems. The frequency-domain response of the vehicle is calculated considering the influence of the wheelbase and bogie spacing filter effects. The effective acceleration of the car body is determined and, starting to this, the optimal damping of the second level of the suspension is calculated.
Authors and Affiliations
Mădălina DUMITRIU
Keywords
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