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Shot peening parameters optimization based on residual stress-induced deformation of large fan blades

  • Northwestern Polytechnical University Xian
  • Shen Yang Liming Aero-Engine Group Corp.

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Deformation of fan blades after shot peening is investigated. A finite element analysis (FEA) model of deformation induced by compressive residual stress (CRS) reveals that the difference in CRS between blade back and blade basin is the main cause of deformation. An FEA model of the influence of shot peening parameters on residual stress shows that to minimize deformation, the parameters should be optimized to give a CRS in the blade back −80 MPa to −50 MPa greater than that in the blade basin. An experimental study shows that the optimized parameters greatly reduce blade deformation caused by shot peening.

Original languageEnglish
Article number107467
JournalThin-Walled Structures
Volume161
DOIs
StatePublished - Apr 2021

Keywords

  • Compressive residual stress
  • Deformation
  • Fan blade
  • Finite element analysis
  • Shot peening

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