A 3-D Numerical Study of Shot Peening Process Using Multiple Shot Impacts

Author:  GH Majzoobi , R Azizi
Source:  Conf Proc: ICSP-9 (pg 88-93)
Doc ID:  2005056
Year of Publication:  2005
Abstract:  
ABSTRACT LS-DYNA code was employed and validated for the numerical simulations in this work. The modeling of shot peening process was accomplished by simulation of multiple shot impacts on a target plate at different velocities and angles. From the simulations, the compressive residual stress profiles were obtained and the effects of shot angle, velocity and multicipility were investigated. The results showed that, residual stress distribution was highly dependent on these parameters. A uniform state of stress was achieved at a particular number of shots. Impact velocity significantly influences the residual stress profile. The increase of velocity improves the residual stress distribution up to a particular point. Further increase in the velocity may reduce the maximum residual stress. A close agreement between the numerical residual stress profiles obtained in this work was achieved with the experimental profiles reported by Torres and Voorwald. The deviation of impact angle from 90