Tire/Pavement interaction is investigated to provide fundamental knowledge concerning tire excitation mechanisms, tire surface vibration, and tire acoustic radiation. Relationships between road surface texture, truck tire noise, and skid number are determined as a function of frequency. A numerical approximation method is developed to predict the contact forces created by road surface texture. Tire structural properties that control dynamic response are experimentally determined. Results show that tire frequency response 1) differs across tread from center to edge, 2) is nearly independent of inflation pressure, and 3) is dependent on contacting indentor size, shape, and angularity. Finite element structural dynamic programs are developed to investigate parameters required to model tire acoustic radiation. Results show that 1) at lease 16 nodes per acoustic wavelength are required for adequate model size, 2) for models with fewer than 16 nodes per wavelength, retardation of the wavefront and a build up of energy occur near the source, and 3) time steps should be less than or equal to 1/2 the time of propagation between nodes. Simple models for predicting tire/pavement contact forces, tire surface vibration, and tire acoustic radiation are analyzed, and future model developments are described. (Author)

  • Corporate Authors:

    North Carolina State University, Raleigh

    Department of Mechanical and Aerospace Engineering
    Raleigh, NC  United States  27695

    Office of the Secretary of Transportation

    University Research Office, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Eberhardt, A C
    • Clapp, T G
    • Chassaing, C E
    • Goff, M C
  • Publication Date: 1985-6

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 223 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00457586
  • Record Type: Publication
  • Report/Paper Numbers: DOT-OST-P-34-86-036
  • Contract Numbers: DTRS5681-C-00002
  • Files: TRIS, USDOT
  • Created Date: Aug 31 1986 12:00AM