THE NONHOLONOMIC CONSTRAINTS OF A VEHICLE OF PNEUMATIC TIRES

The nonholonomic constraints, taking into account tire deformations and their rates in multiple directions, have been developed for a three dimensional model of a vehicle having an independent front suspension. The analyzed model has been described by eleven generalized coordinates selected from the most important linear and angular displacements due to nonsymmetrical movements of the vehicle. The kinematic analysis of a vehicle suspension has been provided and the relationships between the velocities of wheel centers, rates of tire deformations and velocities of sprung and unsprung masses have been established. Spinning velocities of the wheels have been presented as the functions of local tire deformations, vehicle velocity and its equilibrium position. The developed nonholonomic constraints impose the conditions on the rates of tire deformations and are a base for the dynamic equations of motion. The validity of a nonholonomic model has been confirmed by an analysis of dynamic stability of the vehicle in oblique airflow caused by the crosswind. For the covering abstract of the conference see TRIS 395019. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9026504616
• Supplemental Notes:
  • Papers from the Proceedings of the 8th IAVSD Symposium, the Dynamics of Vehicles of Roads and Railway Tracks, Held at Massachusetts Institute of Technology, Cambridge, Massachusetts, August 15-19, 1983.
• Corporate Authors:

  Swets & Zeitlinger

  Heereweg 347B
  2161 CA Lisse,   Netherlands 
• Authors:
  • Nalecz, A G
• Conference:
  • Papers from the Proceedings of the 8th IAVSD Symposium, the Dynamics of Vehicles of Roads and Railway Tracks, Held at Massachusetts Institute of Technology, Cambridge, Massachusetts, August 15-19, 1983.
• Publication Date: 1984

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 390-406

Subject/Index Terms

• TRT Terms: Automobiles; Conferences; Deformation; Driving; Handling characteristics; Mathematical models; Mechanical stability; Mineral dislocations; Motor vehicles; Pneumatic equipment; Simulation; Speed; Suspension systems; Suspensions; Tires; Traffic speed; Validity; Wheels
• Old TRIS Terms: Pneumatic tire
• ITRD Terms: 1243: Car; 8525: Conference; 5595: Deformation; 6473: Mathematical model; 9103: Simulation; 5408: Speed; 5930: Stability; 1329: Suspension (veh); 9080: Three dimensional; 1381: Tyre; 1646: Vehicle handling; 1372: Wheel
• Subject Areas: Highways; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00395028
• Record Type: Publication
• Source Agency: Institute for Road Safety Research, SWOV
• ISBN: 90-265-0461-6
• Report/Paper Numbers: REPORT
• Files: ITRD, TRIS
• Created Date: Oct 31 1985 12:00AM