Effect of edge distance ratio on residual stresses induced by cold expansion and fatigue life of TC4 plates

Jun Liu, Henggui Wu, Jinjie Yang, Zhufeng Yue

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

A finite element model is used to analyze the residual stress distribution around a cold expanded hole in a TC4 plate with various values of the edge distance ratio. The fatigue life of cold expanded hole is predicted using two models based on the critical plane approaches: SWT model and WB model. The predicted values are also compared with experimental results. The results show that the WB model achieves a better accuracy for cold expanded holes. When the edge distance ratio decreases, the residual tangential compressive stress and fatigue life of a cold expanded holes decrease.

Original languageEnglish
Pages (from-to)130-137
Number of pages8
JournalEngineering Fracture Mechanics
Volume109
DOIs
StatePublished - Sep 2013

Keywords

  • Critical plane approach
  • Edge distance ratio
  • Residual stress
  • Split-sleeve cold expanded holes
  • TC4 titanium alloy plate

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