Theoretical analysis of the plastic yielding of a hard asperity sliding on a soft flat surface

T. Kayaba, K. Kato, K. Hokkirigawa

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


When a hard material slides on a soft material, wear occurs generally on the soft material surface. Wear can also occur on the harder material but the conditions for this have not yet been elucidated. As plastic deformation of contact points is an important factor in the generation of wear particles, the condition under which the plastic yielding of each material occurs simultaneously and the condition under which the hard asperity yields before the soft flat surface were analysed theoretically. The analysis indicates that there is a critical value, which depends on the hardness ratio and the shear stress on the interface, for the top angle of the asperity. If the top angle of an asperity is less than this critical value, the asperity can yield plastically despite its being harder than the mating surface.

Original languageEnglish
Pages (from-to)151-161
Number of pages11
Issue number2
Publication statusPublished - 1983 May 16

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry


Dive into the research topics of 'Theoretical analysis of the plastic yielding of a hard asperity sliding on a soft flat surface'. Together they form a unique fingerprint.

Cite this