Surface cracks in layered hertzian contact with friction

Academic Article

Abstract

  • Stresses near the tip of a vertical surface breaking crack in a two dimensional, layered, elastic medium, subject to frictional Hertzian line contact, are determined using finite elements. The “stress method” is used to extrapolate values of the stress intensity factors, KIand KII, for variations in crack length, layer thickness, load location and friction. The results for a layer/substrate combination of TiN/steel indicate that, for zero friction, KI> 0 when contact is distant from the crack. KIIachieves maximum values when the contact is adjacent to the crack where Mode I stresses are compressive. KIvalues decrease with decreased layer thickness and significantly increase for cracks trailing a frictional load. A reduction in crack length by a factor of two does not significantly alter KIand KIIvalues. © 1995 Taylor & Francis Group, LLC.
  • Authors

    Published In

    Digital Object Identifier (doi)

    Author List

  • Eberhardt AW; Peri S
  • Start Page

  • 299
  • End Page

  • 304
  • Volume

  • 38
  • Issue

  • 2