The effect of interference-fit on fretting fatigue crack initiation and K of a single pinned plate in 7075 Al-alloy

M Mirzajanzadeh, T N Chakherlou, Jeffrey Vogwell

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The effect of interference-fit on fretting fatigue crack initiation and K was studied numerically for available experimental results in a single pinned plate in Al-alloy 7075-T6. The role of interference ratio was investigated alongside friction coefficient through finite element. Cyclic stress distributions in the plate ligament and fretting stresses on the contact interface were evaluated using 3-D elastic-plastic finite element models. Additionally a 3-D elastic finite element model was utilized to discuss K of cracks emanating from interference fitted holes. Results demonstrate that fretting was the main reason for crack nucleation, and furthermore, the location was precisely predicted and fatigue life enhancement was explained.
Original languageEnglish
Pages (from-to)1233-1246
Number of pages14
JournalEngineering Fracture Mechanics
Volume78
Issue number6
DOIs
Publication statusPublished - Apr 2011

Keywords

  • interference fit
  • finite element
  • fatigue life
  • stress intensity factor
  • fretting

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