A numerical and experimental study of distribution of the residual stress on the shot peened low alloy steel

Pham Quang Trung, David Lee Butler, Sridhar Idapalapati

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1 Citation (Scopus)

Abstract

Shot peening is a cold working process, which is used to enhance the properties of materials, especially the fatigue life as it induces large compressive residual stresses in the subsurface of materials. In this paper, the effect of the shot peening process on the topography of the shot peened surface and the distribution of the residual stresses in the subsurface of the material was systematically investigated. A technique to estimate the shot peening coverage was employed using a finite element model which was further developed using experimental results for increased accuracy. The comparison between the numerical and experimental studies gives a good agreement of the distribution of the residual stresses in the subsurface of the shot peened material. The shot peening pressure and media size are two main factors affecting on the presence of compressive residual stresses in the subsurface of the material.
Original languageEnglish
Article number041006
Number of pages8
JournalJournal of Engineering Materials and Technology
Volume140
Issue number4
DOIs
Publication statusPublished - 24 May 2018

Keywords

  • shot peening
  • AISI 4340 steel
  • FEM
  • residual stress
  • random function

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