SUB-CRITICAL AND SUPER-CRITICAL BOGIES
Subcritical and supercritical design aspects of bogies are discussed, and a diagram reveals pitching frequency versus speed and relative severity for various bogie designs. It was considered improbable that a bogie could be designed more subcritical than the Commonwealth, so that the problem was one of the feasibility of designing a supercritical bogie. Such a bogie must exhibit a natural frequency of 11.6 cycles/sec. for a maximum speed of 90 mph or 12.4 cycles/sec. for 100 mph. It was concluded that such a bogie would pose no design problems even with a pivot load of 9 ton and a maximum speed of 100 mph.
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Corporate Authors:
Temple Press Limited
161-166 Fleet Street
Longon EC4, England -
Authors:
- Sheppard, F E
- Publication Date: 1963-2-22
Media Info
- Features: Figures;
- Pagination: p. 220
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Serial:
- RAILWAY GAZETTE
- Volume: 118
Subject/Index Terms
- TRT Terms: Pitch (Dynamics); Pitch (Dynamics); Railroad cars; Spring; Suspension systems; Suspensions; Technology; Trucks; Vehicle design; Velocity; Wheels; Wheelsets (Railroads)
- Geographic Terms: United Kingdom
- Subject Areas: Design; Motor Carriers; Railroads; Vehicles and Equipment;
Filing Info
- Accession Number: 00037264
- Record Type: Publication
- Files: TRIS
- Created Date: Dec 4 1994 12:00AM