DYNAMIC ROCKING RESPONSE AND OPTIMIZATION OF THE NONLINEAR SUSPENSION OF A RAILROAD FREIGHT CAR

A modified mathematical model of a large capacity railroad freight vehicle is presented. The model for this investigation is constructed in such a way to describe the bounce, sway and rocking modes of the system and also to account for most of the vehicle nonlinearity effects. Equations of motion of the six degree of freedom nonlinear model are derived assuming that the excitations from the track in vertical and lateral directions are purely periodic in the form of a rectified sine wave. The solution for the time and frequency responses on digital computer are compared with available measured data to investigate the model accuracy. Multivariable optimization techniques are employed to find the optimum suspension parameters that minimizes the maximum rocking response over the frequency range of interest. The optimum parameters are presented in different forms either for the existing or for stabilized vehicle configuration.

  • Corporate Authors:

    American Society of Mechanical Engineers

    Two Park Avenue
    New York, NY  United States  10016-5990
  • Authors:
    • Samaha, M
    • SANKAR, T S
  • Publication Date: 1980-1

Media Info

  • Features: References;
  • Pagination: p. 86-93
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00316267
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Sep 16 1980 12:00AM