WSEAS Transactions on Applied and Theoretical Mechanics
Print ISSN: 1991-8747, E-ISSN: 2224-3429
Volume 10, 2015
Numerical Simulation of Shot Peening Process: Influence of the Constitutive Model of the Target Material
Authors: , , ,
Abstract: This paper analyse the effect of the constitutive material model used to describe the target material on the results obtained from numerical simulation of shot peening process. From experimental characterization of a duplex stainless steel, including both high rate monotonic tests and low cyclic fatigue tests, three constitutive models are proposed and incorporated into a FE simulation. Numerical predictions of residual stresses and roughness, and experimental results are compared. Best results were obtained using a non-linear kinematic–isotropic model which combines the effect of the cyclic deformation produced by repeated impacts with the strain rate effect through its isotropic component. The only consideration of the effect of the strain rate, overestimate the experimental values of residual stress. On the other hand, if only the cyclic loading effect is taken into account, numerical predictions underestimate the actual residual stresses values.
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Pages: 194-203
WSEAS Transactions on Applied and Theoretical Mechanics, ISSN / E-ISSN: 1991-8747 / 2224-3429, Volume 10, 2015, Art. #21