Within the Shift2Rail project RUN2Rail, an innovative Metro vehicle with single axle running gear is proposed. In NEXTGEAR, also a Shift2Rail project, the work is continued to achieve a higher technical readiness level. For a 2-axle vehicle with a wheelset distance of 8 m the contradiction between stability and curving performance is imminent, and an active wheelset guidance is considered necessary for networks with many small curve radii. For networks with larger curve radii a passive solution might be enough. A nonlinear axle guidance stiffness that has the potential to improve the curving performance is studied here. The running gear frame is modelled in Abaqus® and structural frame modes are implemented in SIMPACK® together with the other suspension elements. To select the properties of the nonlinear spring, simulations are performed to check stability at demanding conditions at 160 km/h on tangent track as well in a curve with 1000 m radius. These two cases give the high and low guidance stiffness of the nonlinear spring. The results show that a nonlinear wheelset guidance can reduce the wear compared to a linear guidance and be an alternative to active wheelset steering for networks with low numbers of narrow curves.
Single Axle Running Gear with Nonlinear Axle Guidance Stiffness
Lect.Notes Mechanical Engineering
The IAVSD International Symposium on Dynamics of Vehicles on Roads and Tracks ; 2021 August 17, 2021 - August 19, 2021
2022-08-06
7 pages
Article/Chapter (Book)
Electronic Resource
English
On the possibilities and limitations of single-axle running gear: a dynamic study
British Library Conference Proceedings | 1994
|Online Contents | 1996
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