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Table 1

The parameters of the numerical model.

Bogie mass mb = 2400 kg
Wheelset mass mw = 1400 kg
Rail mass (under the axle) mr = 175 kg
Bogie wheelbase 2ab = 2.5 m
Inertia moment Jb = 2.28 × 103 kg m2
Elastic constant of the suspension corresponding to a wheel k zb = 0.616 MN/m
Damping constant of the suspension corresponding to a wheel cb = 9.05 kNs/m
Track vertical stiffness kr = 70 MN/m
Vertical damping of the track cr = 60 kNs/m
Stiffness of the wheel–rail contact k H = 1500MN/m
Force due to the secondary suspension Fs = 167 kN

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