TWO PROBLEMS IN TIRE SHEAR FORCE EVALUATION: THE INFLUENCE OF WHEEL DECELERATION RATE OF BRAKING FORCE AND A METHODOLOGY FOR OBTAINING TIRE SIDE FORCE NUMERICS

The report deals with the influence of wheel deceleration rate on the braking force produced by pneumatic tires, and numerics for evaluating the lateral force performance of pneumatic tires. It is found that the maximum braking force obtained from passenger car tires operated on wet surfaces can be significantly affected by wheel deceleration rate. Three numerics have been chosen to provide a safety-relevant condensation of tire lateral force data. These numerics are cornering stiffness at rated load and inflation pressure, maximum lateral force at 40 mph on representative wet surfaces and the rate of change of maximum lateral force evaluated at 40 mph on the same wet surfaces.

• Corporate Authors:

  Highway Safety Research Institute

  Huron Parkway and Baxter Road
  Ann Arbor, MI  United States  48109

  National Highway Traffic Safety Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Wild, R E
  • TIELKING, J T
  • Fancher, P S
• Publication Date: 1974-10

Media Info

• Pagination: 49 p.

Filing Info

• Accession Number: 00080447
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: UM-HSRI-PF-74-8 Final Rpt.
• Contract Numbers: DOT-HS-031-3-676
• Files: NTIS, USDOT
• Created Date: Feb 11 1977 12:00AM