The Finite Element Analysis for Prediction of Residual Stresses Induced by Shot Peening

쇼트피닝 잔류응력 예측을 위한 유한요소해석

  • 김철 (성균관대학교 대학원 기계설계학과) ;
  • 양원호 (성균관대학교 기계공학부) ;
  • 성기득 (성균관대학교 대학원 기계공학과) ;
  • 조명래 (인덕대학 기계설계과) ;
  • 고명훈 (대림대학 산업기술경영과)
  • Published : 2000.04.20

Abstract

The shot peening is largely used for a surface treatment in which small spherical parts called shots are blasted on a surface of a metallic components with velocities up to 100m/s. This treatment leads to an improvement of fatigue behavior due to the developed compressive residual stresses, and so it has gained widespread acceptance in the automobile and aerospace industries. The residual stress profile on surface layer depends on the parameters of shot peening, which are, shot velocity, shot diameter, coverage, impact angle, material properties etc. and the method to confirm this profile is only measurement by X-ray diffractometer. Despite its importance to automobile and aerospace industries, little attention has been devoted to the accurate modelling of the process. In this paper, the simulation technique is applied to predict the magnitude and distribution of the residual stress and plastic deformation caused by shot peening with the help of the finite element analysis.

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