TYRE PROPERTIES AND ROLLING CHARACTERISTICS ON DRY AND WET ROADS

The paper presents a general formulation of the tyre mechanics of generating tangential forces in response to the rolling motion of wheels which deviates from pure rolling and the way in which the elastic structural properties may be modelled in that formulation. The other basic property of friction at the contact interface is considered only in a qualitative manner. Due to the complexity of the elastic structural response of a pneumatic tyre various simple models have been proposed. They are well suited to represent a single mode of deformation or rolling. The principles involved in single mode modelling of 1-d and 2-D elastic fields are described with suitable illustrations. The theory of 1-d mathematical model is presented and applied to construct the lateral influence functions of tyres. The discerning ability of the influence function in bringing out effects of structural design changes and variations of operating parameters is demonstrated in results of experiments carried out on a range of tyres. The extension to 2-d modelling is indicated and the effect of frictional properties on tyre characteristics of dry roads is discussed briefly. Finally the effect of the normal influence function on the elasto-hydrodynamic conditions in wet road rolling is considered. For the covering abstract of the conferencve see TRIS 395019. (Author/TRRL)

Media Info

  • Features: Figures; Photos; References;
  • Pagination: p. 488-516

Subject/Index Terms

Filing Info

  • Accession Number: 00395033
  • 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