THE DYNAMIC BEHAVIOR OF NONUNIFORM TIRE/WHEEL ASSEMBLIES

Nonuniformities in the rotating tire and wheel components of a motor vehicle may excite ride vibrations. Both the vehicle and the wheel assembly are dynamic systems that interact via the forces and motions produced. Measurement of the force variations inherent to a nonuniform tire/wheel assembly in a meaningful way therefore requires a basic understanding of the dynamic systems involved. Impedance methods are employed to formulate a dynamic model for a nonuniform tire/wheel assembly and a loading system that can represent either a test machine or a motor vehicle. The models are used to explain the potential error sources that may arise in tire uniformity tests on a machine that has dynamic response in the range of interest. The model of a vehicle coupled to a nonuniform tire/wheel assembly is used to explain the dynamic interaction that occurs between the vehicle and wheel assembly. Examples are given to illustrate the importance of impedance coupling in predicting the effect of nonuniformities on vehicle vibration.

  • Corporate Authors:

    University of Michigan Transportation Research Institute

    2901 Baxter Road
    Ann Arbor, MI  United States  48109-2150

    Motor Vehicles Manufacturers Association

    320 New Center Building
    Detroit, MI  United States  48202
  • Authors:
    • Gillespie, T D
  • Publication Date: 1983-11

Media Info

  • Features: Figures; References;
  • Pagination: 53 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00387748
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: UMTRI-83-8, HS-036 418
  • Contract Numbers: MVMA Proj 1162
  • Files: HSL, TRIS, USDOT
  • Created Date: Aug 30 1984 12:00AM