TESTS CONCERNING THE PROBLEMS INVOLVED WITH THE KINEMATIC GAUGE. THEORETICAL INVESTIGATIONS CONCERNING THE POSITION OF VEHICLES IN THE TRACK
With regard to the position of bogies in the track, it was found that in curves, while braking, while stationary and upon starting, the leading axles of bogie vehicles were pressed against the guiding surface of the outer rail. The rear axles of the bogie vehicles were displaced towards the inside of the curve and the clearance between outer rail and the wheel varied between 0 and 30 mm. The motor bogies of electric tractive units were an exception. During acceleration, the wheelsets of these sometimes slid, within short distances (10 to 60 m), to press against the inner rail. The question still remained as to whether, for calculating the inner and outer limits, these tests were sufficiently representative to allow the problem of track negotiation as set forth in Technical Unity to be dispensed with and whether some new positions should be indicated more suitable to the permissible widths of vehicles, especially passenger coaches. The influence of the automatic coupler and of the pronounced longitudinal forces which might occur during the braking of a long train (due to dynamic phenomena) would also have to be taken into account.
- Restrictions on the use of this document are contained in the explanatory material.
International Union of RailwaysOffice of Research and Experiments
- Publication Date: 1968-4
- Features: Figures;
- Pagination: 20 p.
- TRT Terms: Braking performance; Car wheels (Railroads); Creep; Dynamics; Force; Hunting (Dynamics); Rail (Railroads); Steering; Train track dynamics; Trucks; Wheels
- Uncontrolled Terms: Lateral dynamics
- Old TRIS Terms: Question c102; Wheel creep; Wide gauge
- Subject Areas: Motor Carriers; Railroads; Vehicles and Equipment;
- Accession Number: 00052794
- Record Type: Publication
- Source Agency: International Union of Railways
- Report/Paper Numbers: C102/RP 1/E
- Files: TRIS
- Created Date: May 14 1976 12:00AM