WHEELSET LATERAL DYNAMIC ANALYSIS USING THE DESCRIBING FUNCTION TECHNIQUE

This paper deals with the analysis and dynamic modeling of railway wheelsets moving on straight regular tracks. The describing function method of analysis is applied to investigate the influence of parametric variations on wheelset critical velocity. In addition, the relationship between the amplitude of sustained lateral oscillations and critical speed is derived. The nonlinearities in the model include the difference in rolling radii as a function of lateral displacement of the wheelset from its mean position, profile conicity, and gravitational stiffness in the lateral and yaw directions. Quantities such as critical speed, frequency of limit cycles, gravitational stiffness, effective conicity, and creepage can be easily computed using the proposed technique.

• Supplemental Notes:
  • Paper for Meeting, September 26-30, 1977.
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Garg, D P
• Publication Date: 1977

Media Info

• Features: References;
• Pagination: 11 p.

Subject/Index Terms

• TRT Terms: Creep; Critical velocity; Dynamic loads; Dynamics; Hunting (Dynamics); Mathematical models; Railroad cars; Railroad rails; Ride quality; Rolling stock; Structural analysis; Train track dynamics; Wheels; Wheelsets (Railroads)
• Uncontrolled Terms: Dynamic response; Lateral dynamics
• Old TRIS Terms: Critical speed; Describing functions; Lateral oscillations; Wheel creep
• Subject Areas: Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00173151
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: N-77-DET-149
• Files: TRIS
• Created Date: Apr 26 1978 12:00AM