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An inverse approach to determination of residual stresses induced by shot peening in round bars

Farrahi, G. H ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1016/j.ijmecsci.2009.08.004
  3. Publisher: 2009
  4. Abstract:
  5. In this paper an analysis is presented to determine the distribution of a residual stress field from a limited incomplete set of measurements obtained from shot-peened round steel bars. Using an Airy stress function as the primary unknown the axisymmetric stress equations are solved directly. In this new method there exists the flexibility to impose physical conditions that govern the behavior of residual stress to achieve a meaningful complete stress field. This new method aims to achieve the best agreement between the model prediction and limited measured stress components in the sense of least squares approximation. The power of this new method is demonstrated by analyzing experimental data and achieving a good agreement between the model prediction and the results obtained from residual stress measurement. © 2009 Elsevier Ltd. All rights reserved
  6. Keywords:
  7. Approximation theory ; Inverse problems ; Residual stress ; Axisymmetric ; Experimental data ; Inverse approach ; Limited measurements ; Model prediction ; Physical conditions ; Residual stress fields ; Steel bars ; Stress component ; Stress equation ; Stress field ; Differential equations ; Least squares approximations ; Residual stresses ; Shot peening ; Stress measurement
  8. Source: International Journal of Mechanical Sciences ; Volume 51, Issue 9-10 , 2009 , Pages 726-731 ; 00207403 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S0020740309001441