SOME ASPECTS OF THE HUNTING OF A RAILWAY AXLE

Equations of motion are derived to describe the hunting mode of a railway axle running at constant velocity along straight track. It is assumed that the wheel and rail-head profiles take some arbitrary shape. This shape gives rise to non-linearities in the equations. The equations are first linearized, and approximate expressions derived for the frequency of the oscillation and conditions of stability. Asymptotic stability for all initial conditions of the non-linear system is then considered in the manner of Aiserman, and the equations are examined for stable limit-cycle by applying the first approximations of Kryloff and Bogoliuboff. It is shown that, when running at low velocities, the axle will execute limit-cycle oscillations even though the wheel's flanges do not contact the rails. Small increases in velocity, however, quickly result in flange contact.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0022460X
• Corporate Authors:

  Academic Press Incorporated

  Berkeley Square House, Berkeley Square
  London W1,   England 
• Authors:
  • Brann, R P
• Publication Date: 1966

Media Info

• Features: Appendices; Figures; References;
• Pagination: p. 18-32
• Serial:
  • Journal of Sound and Vibration
  • Volume: 4
  • Issue Number: 1
  • Publisher: Elsevier
  • ISSN: 0022-460X
  • EISSN: 1095-8568
  • Serial URL: http://www.sciencedirect.com/science/journal/0022460X

Subject/Index Terms

• TRT Terms: Axles; Critical velocity; Hunting (Dynamics); Mathematical models; Motor vehicles; Railhead; Railroad rails; Railroad tracks; Stability (Mechanics); Structural design; Tangent track; Technology; Tires; Trucks; Vehicle design; Vehicle dynamics; Velocity; Wheels
• Geographic Terms: United Kingdom
• Old TRIS Terms: Mathematical studies; Rail design; Rail head profile; Tire profile; Wheel design
• Subject Areas: Design; Motor Carriers; Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00037211
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 5 1976 12:00AM