CARRIAGE AND RAILCAR BOGIES: THEIR DESIGN AND DEVELOPMENT--V

The determination of bolster-spring oscillation amplitudes, swing-link displacements, and their phasing using oscillographic instrumentation can be used for definite assessment of riding qualities. Vibrograph wedge tests permit determination of damping factors. The frequency of lateral/swaying oscillations can be determined by placing the vehicle on a transfer table and imparting an impulse by suddenly stopping the moving table. Similarly, body-nosing can be excited by placing the vehicle on a turntable, the center of gravity of the body being in line with the center of rotation. A sudden stop of the turntable will then excite body-nosing oscillations at their natural frequency. It should be stressed, however, that as far as vertical body oscillations are concerned wedge tests are not fully representative of road conditions.

• Corporate Authors:

  Temple Press Limited

  161-166 Temple Press Limited
  London EC4,   England 
• Authors:
  • KOFFMAN, J L
• Publication Date: 1961-9-29

Media Info

• Features: Figures; Photos;
• Pagination: p. 363-366
• Serial:
  • RAILWAY GAZETTE
  • Volume: 115

Subject/Index Terms

• TRT Terms: Damping (Physics); Equipment tests; Friction; Hunting (Dynamics); Passenger cars; Railroad cars; Ride quality; Rocking; Spring; Suspensions; Technology; Trucks; Vehicle design; Vehicle dynamics
• Uncontrolled Terms: Lateral dynamics
• Geographic Terms: United Kingdom
• Old TRIS Terms: Car rocking; Swinghangers; Test equipment
• Subject Areas: Design; Motor Carriers; Railroads;

Filing Info

• Accession Number: 00040084
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 4 1994 12:00AM