Paper Title:
Calculation of Relaxation of Residual Stress and Change of Yield Strength in Shot Peened Layer
  Abstract

Residual stresses distribution after shot peening and its relaxation during uni-axial loading were investigated experimentally and theoretically on stainless steel of AISI304. An analytical model was proposed based upon continuum plasticity theory and elasto-plasticity finite element (FE) analysis, in which both relaxation of shot peening induced residual stress and variation of yield strength in the surface layer were taken into consideration. The results show that the value of yield strength in surface layer is altered after shot peening, and the relaxation of residual stress takes place at the point where the combination of applied strain and residual strain exceeds the true value of yield strength. A fundamental agreement was proved between measurements and predictions in simple tension and compression.

  Info
Periodical
Materials Science Forum (Volumes 490-491)
Edited by
Sabine Denis, Takao Hanabusa, Bob Baoping He, Eric Mittemeijer, JunMa Nan, Ismail Cevdet Noyan, Berthold Scholtes, Keisuke Tanaka, KeWei Xu
Pages
396-403
DOI
10.4028/www.scientific.net/MSF.490-491.396
Citation
Y. H. Li, J. Lu, K. W. Xu, "Calculation of Relaxation of Residual Stress and Change of Yield Strength in Shot Peened Layer", Materials Science Forum, Vols. 490-491, pp. 396-403, 2005
Online since
July 2005
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Price
$32.00
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