Development of Mathematical Model for Pneumatic Tire-Soil Interaction

Abstract

The role of tire deformation in tire-soil interaction is discussed, and a mathematical model is described that incorporates the qualitative relationships obtained from experimental data describing tire deformation as a function of the relative stiffness of the tire to the soil. The mathematical model assumes that the centerline geometry of tires consists of straight lines and logarithmic spirals and that there is a certain limit to the normal pressure that may develop beneath a tire. This limiting normal pressure is a tire property and is dependent on tire inflation pressure. Soil is modeled by its Coulomb strength parameters. Plastic equilibrium conditions in soil determine the interface stresses where the normal stress is less than the limiting normal pressure. Values of free parameters in the model that determine tire centerline geometry were analyzed.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1974
Accession Number
AD0783425

Entities

People

  • Leslie L. Karafiath

Organizations

  • Grumman

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Adhesion
  • Computational Science
  • Computer Programs
  • Equations
  • Geometry
  • Materials
  • Mathematical Models
  • Measurement
  • Mechanics
  • Moisture Content
  • Performance Tests
  • Pressure Distribution
  • Shear Tests
  • Surface Properties
  • Test And Evaluation
  • Three Dimensional
  • Two Dimensional

Readers

  • Calculus or Mathematical Analysis
  • Combustion and Flow Dynamics.
  • Pavement Materials Engineering.