Title: Three-dimensional finite-element procedures for shot peeening residual stress filed prediction

Authors: S. Baragetti

Addresses: Dipt. di Meccanica, Politecnico di Milano, Piazza L. Da Vinci, 32-20133, Milano, Italy

Abstract: Shot peening is widely used to improve the performances of machine elements subjected to fatigue loading, stress corrosion cracking or fretting, mainly due to the favourable residual stress field induced. However, many times the choice of the treatment parameters is made by following empirical considerations that do not take the residual stresses into account and, consequently, do not allow optimisation of the treatment results. To reach this objective, it is necessary to accurately know the residual stress field induced by varying the shot peening parameters. Finite element analyses of shot peening, both axisymmetric and three dimensional, were developed to predict the residual stress field induced with different treatment parameters. Different approaches were used to evidence limits of every one and to determine the numerical method that allows to reach the best results with the less expansive use of hardware and software.

Keywords: shot peening; multiple impacts; numerical procedures; three-dimensional models.

DOI: 10.1504/IJCAT.2001.000260

International Journal of Computer Applications in Technology, 2001 Vol.14 No.1/2/3, pp.51-63

Published online: 15 Jul 2003 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article