Estimating Runflat Stiffness

Abstract

This report documents a method to estimate runflat stiffness using the bulk modulus of the runflat material. For the example dimensions and material properties given, the runflat stiffness is estimated to be approximately 6,000 pounds per inch and will be contacted after 4.53 inches of tire deflection. The report describes example runflat technology and dimensions, discusses bulk modulus and appropriate values for it, details the calculation for determining compression of the runflat, describes the method used to estimate the runflat force upon impact and its stiffness rate at various tire deflections, determines the amount of tire deflection at which runflat contact begins, and summarizes the results.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2007
Accession Number
ADA466491

Entities

People

  • Dave Gunter
  • Wesley Bylsma

Organizations

  • Tank-automotive and Armaments Command

Tags

DTIC Thesaurus Topics

  • Bulk Modulus
  • Compression
  • Deflection
  • Engineering
  • Geometry
  • Information Operations
  • Materials
  • Mechanical Properties
  • Military Research
  • Military Standards
  • Physical Properties
  • Product Development
  • Spreadsheet Software
  • Standards
  • Stiffness
  • Thickness

Readers

  • Pavement Materials Engineering.