Title: A numerical procedure for shot peening optimisation by means of non-dimensional factors

Authors: S. Baragetti, M. Guagliano, L. Vergani

Addresses: Dipto Meccanica, Politecnico di Milano, Piazza L. da Vinci, 32, I-20133 Milano, Italy. Dipto Meccanica, Politecnico di Milano, Piazza L. da Vinci, 32, I-20133 Milano, Italy. Dipto Meccanica, Politecnico di Milano, Piazza L. da Vinci, 32, I-20133 Milano, Italy

Abstract: Shot peening is widely used to improve the fatigue behaviour of mechanical components. The improved performances of shot peened components are generally put into relation with the residual stress field induced. The aim of the present paper is to define a calculation approach, based on FE analyses, able to predict, once the shot peening parameters are known, the residual stress profile. In this way, it is possible to optimise the results of shot peening by taking into account the applied loads. The possible application of a non-dimensional number to summarise the shot peening conditions was evaluated. It was also possible to express non-dimensional residual stress profiles (residual stresses/yield stress of the material) as a function of this non-dimensional number. The measurements carried out on shot peened specimens by means of a X-ray diffractometer allowed for critical analyses of the results.

Keywords: shot peening; numerical procedures; non-dimensional curves; parameters optimisation.

DOI: 10.1504/IJMPT.2000.001238

International Journal of Materials and Product Technology, 2000 Vol.15 No.1/2, pp.91-103

Published online: 01 Jul 2003 *

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