TIRE PERFORMANCE CHARACTERISTICS AFFECTING VEHICLE RESPONSE TO STEERING AND BRAKING CONTROL INPUTS

A THEORETICAL STUDY OF THE INFLUENCE OF TIRE-MECHANICS CHARACTERISTICS ON THE BEHAVIOR OF AN AUTOMOBILE UNDERGOING MANEUVERS REQUIRING THE TIRES TO PRODUCE COMBINED LONGITUDINAL AND LATERAL FORCES WAS PERFORMED. A SIMULATION MODEL SPECIFICALLY DESIGNED TO STUDY VEHICLE RESPONSE UNDER SKIDDING AND NEAR-SKIDDING CONDITIONS WAS DEVELOPED. THE MODEL INCLUDED A REPRESENTATION OF WHEEL ROTATIONAL DEGREES OF FREEDOM, AND RELATIONSHIPS EXPRESSING THE LONGITUDINAL AND LATERAL TIRE SHEAR FORCE COMPONENTS AS ANALYTICAL FUNCTIONS OF TIRE NORMAL LOAD, SIDESLIP AND INCLINATION ANGLES, AND LONGITUDINAL SLIP. THE TIRE SHEAR FORCE RELATIONSHIPS WERE SHOWN TO AGREE QUALITATIVELY WITH AVAILABLE EXPERIMENTAL DATA. THE SIMULATION WAS APPLIED TO EXAMINE THE INFLUENCE ON VEHICLE RESPONSES TO VARIOUS OPEN- LOOP STEERING AND BRAKE-CONTROL INPUTS OF VARIATIONS IN THE VALUES OF THREE PARAMETERS: LATERAL TIRE STIFFNESS, LONGITUDINAL TIRE STIFFNESS, AND THE COEFFICIENT OF FRICTION AT THE TIRE-ROAD INTERFACE. /AUTHOR/

• Corporate Authors:

  Highway Safety Research Institute

  Huron Parkway and Baxter Road
  Ann Arbor, MI  United States  48109
• Authors:
  • Dugoff, H
  • Fancher, P S
  • Segel, L
• Publication Date: 1969-8

Subject/Index Terms

• TRT Terms: Braking; Coefficient of friction; Shear stress; Simulation; Skidding; Steering; Stiffness; Tires; Vehicle performance
• Uncontrolled Terms: Shear forces
• Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00223094
• Record Type: Publication
• Report/Paper Numbers: 105 pp
• Files: TRIS
• Created Date: Feb 16 1970 12:00AM