Location of the first yield point and wear mechanism in torsional fretting

Xiaoyong Li*, Shilong Wang, Zhanjiang Wang, Pengyang Li, Q. Jane Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Material wear in the contact area may lead to fatigue failure of a structural component under torsional fretting. It is necessary to investigate the wear mechanisms accompanying torsional fretting, especially during the unloading process. This paper intends to analyze the torsional stress field during loading and unloading processes and to explore the link between fretting wear and the location of material first yield, for which a parametric study on factors influencing this location, such as coefficient of friction and stick zone ratio, is committed. Because the surface shear traction is complex during the unloading process, the subsurface stress field is calculated by means of an efficient semi-analytical method. The relationship between the first yield location and wear mechanism is examined through observations of worn surfaces from a set of torsional fretting experiments.

Original languageEnglish (US)
Pages (from-to)265-273
Number of pages9
JournalTribology International
Volume66
DOIs
StatePublished - 2013

Keywords

  • Abrasion
  • Contact mechanics
  • Fretting
  • Numerical method

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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