Thermomechanical Effects in Sliding Wear,

Abstract

When sliding occurs with significant frictional heating, thermoelastic deformation may lead to a transition from smoothly distributed asperity contact to a condition where the surfaces are supported by a few thermal asperities. This circumstance may be associated with a transition to a condition of severe wear because of the elevated contact pressure and temperature, and also because of production of tensile stresses. This second stress component may lead to heat checking whereupon the rough checked surface acts to abrade the mating material. The factors influencing transition are discussed, including wear, cooling, and hydrodynamic lubrication. The transitioned state is also discussed as to stress distribution, rate of movement of the contact patches and temperatures. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1978
Accession Number
ADA055318

Entities

People

  • Ralph A. Burton

Organizations

  • Northwestern University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Bearings
  • Coefficients
  • Curvature
  • Elastic Properties
  • Equations
  • Films
  • Friction
  • Heat Transfer
  • Heat Transfer Coefficients
  • Heat Transmission
  • Hot Spots
  • Lubricants
  • Lubrication
  • Materials
  • Mechanical Engineering
  • Mechanics
  • Sliding Contacts

Readers

  • Mathematical Modeling and Probability Theory.
  • Mechanical Engineering/Mechanics of Materials.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).