The paper discusses the fully non-linear behaviour of railway vehicles whose axles are considered as torsionally flexible. Critical speeds of the ERRIWagon available in the library of the selectedmultibody software are investigatedwith different axle stiffness in order to evaluate any possible reduction in the dynamic characteristics at high speed. All these analyses are applicable to a novel wheelset arrangement where individually supported wheels are connected by a torsionally flexible shaft where the wheels can be easily changed and the axle subjected to rotational bending is replaced by two fixed stub axles. In a further development, the connecting shaft is equipped with a torque limiter. Steering and stability are discussed in order to identify any potential drawbacks in this arrangement.
Running dynamics of railway vehicles equipped with torsionally flexible axles and partially independently rotating wheels / Bracciali, A.; Megna, G.. - CD-ROM. - (2016), pp. 1387-1398. (Intervento presentato al convegno 24th Symposium of the International Association for Vehicle System Dynamics, IAVSD 2015 tenutosi a aut nel 2015).
Running dynamics of railway vehicles equipped with torsionally flexible axles and partially independently rotating wheels
BRACCIALI, ANDREA;MEGNA, GIANLUCA
2016
Abstract
The paper discusses the fully non-linear behaviour of railway vehicles whose axles are considered as torsionally flexible. Critical speeds of the ERRIWagon available in the library of the selectedmultibody software are investigatedwith different axle stiffness in order to evaluate any possible reduction in the dynamic characteristics at high speed. All these analyses are applicable to a novel wheelset arrangement where individually supported wheels are connected by a torsionally flexible shaft where the wheels can be easily changed and the axle subjected to rotational bending is replaced by two fixed stub axles. In a further development, the connecting shaft is equipped with a torque limiter. Steering and stability are discussed in order to identify any potential drawbacks in this arrangement.File | Dimensione | Formato | |
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112_AIR_Wheelset_Dynamics_Vehicles_Roads_Tracks.pdf
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