ANALYTICAL AND EXPERIMENTAL DETERMINATION OF NONLINEAR WHEEL/RAIL GEOMETRIC CONTRAINTS

The wheel/rail geometric constraint relationships for actual wheel and rail profiles are generally nonlinear functions of wheelset lateral displacement. Two of these relationships which strongly influence the lateral dynamics of railway vehicles are the effective conicity and gravitational stiffness. An algorithm for the digital computer is presented that calculates these nonlinear relationships for arbitrary wheel and rail head profiles. An experimental apparatus was developed to determine the location of the wheel/rail contact points as a function of wheelset lateral displacement for arbitrary profiles. Experimental data obtained with this apparatus are presented for various cases which validate the results of the analytical procedure.

• Supplemental Notes:
  • To be presented at the Winter Annual Meeting.
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Cooperrider, N K
  • Law, E H
  • Hull, R
  • Kadala, P S
  • Tuten, J M
• Publication Date: 1975

Media Info

• Features: Figures; References;
• Pagination: 44 p.

Subject/Index Terms

• TRT Terms: Dynamics; Measuring instruments; Rail (Railroads); Railhead; Train track dynamics; Vehicle design; Wear; Wheels
• Uncontrolled Terms: Lateral dynamics; Wheel profiles
• Old TRIS Terms: Rail head profile; Wheel tread design
• Subject Areas: Design; Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00128635
• Record Type: Publication
• Source Agency: American Society of Mechanical Engineers
• Files: TRIS
• Created Date: Jan 14 1976 12:00AM