ANALYSIS OF NONLINEAR HUNTING VIBRATIONS OF RAIL VEHICLE TRUCKS

Truck hunting of rail freight vehicles is investigated on a tangent track with the car body moving at a certain constant forward velocity. The truck has three degrees of freedom in the lateral, yaw, and parallelogramming directions. The method of describing functions is employed for investigation of hunting. The three nonlinear differential equations of motion are thus converted to a set of six coupled nonlinear algebraic equations which are solved to obtain the values of the frequency, three amplitudes and two phase angles when hunting exists. It is shown that when hunting exists, the values of the frequency, amplitudes and phase angles are such that the energy input per cycle is exactly balanced by the energy dissipated. The orbital stability of limit cycles is investigated by employing the energy balance. The effects of the various parameters on hunting are investigated by parametric studies.

  • Corporate Authors:

    American Society of Mechanical Engineers

    Two Park Avenue
    New York, NY  United States  10016-5990
  • Authors:
    • D'SOUZA, A F
    • Caravavatna, P
  • Publication Date: 1980-1

Media Info

  • Features: References;
  • Pagination: p. 77-85
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00316268
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Sep 16 1980 12:00AM