PRINCIPLES OF BRAKE CONTROL SYSTEM DESIGN

The paper describes the development of a method of predicting brake block wear and gives the results of a first attempt to establish its reliability by comparing the predicted wear with that which actually occurs in an existing service. A new approach to laboratory-scale wear testing has enabled the wear per unit energy dissipated of a given composition material to be determined for any relevant combination of the three basic parameters -- tire surface temperature, rubbing speed and applied force. The values of energy dissipation, rubbing speed and brake force at any instant during a given service are calculated from a knowledge of the relevant vehicle parameters and from direct observation or calculation of the braking duties undertaken. The surface temperatures are calculated from these data using one-dimensional heat flow equations which are improvements on those developed previously. A computer program has been developed which calculates these temperatures and uses laboratory wear data to work out the predicted wear for the service being studied.

• Supplemental Notes:
  • International Conference on Railway Braking, University of York, England, September 26-27, 1979.
• Corporate Authors:

  Institution of Mechanical Engineers

  1 Birdcage Walk
  London SW1H 9JJ,   England 
• Authors:
  • McGuire, M
• Conference:
  • Institution of Mechanical Engineers Conference Pub
• Publication Date: 1979

Media Info

• Features: References;
• Pagination: p. 143-151

Subject/Index Terms

• TRT Terms: Brake shoes; Composite materials; Computer programs; Energy absorption; Laboratory tests; Service life; Wear
• Subject Areas: Design; Railroads;

Filing Info

• Accession Number: 00324898
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: 1979-11 Conf Paper
• Files: TRIS
• Created Date: Feb 6 1981 12:00AM