A Numerical Simulation to Relate the Shot Peening Process Parameters to the Induced Residual Stresses

Author:  T Hong, JY Ooi, J Favier, B Shaw
Source:  Conf Proc: ICSP-9 (pg 100-106)
Doc ID:  2005058
Year of Publication:  2005
Abstract:  
ABSTRACT This paper presents a computational modelling of the shot peening process, in which the finite element (FE) method was employed to study the elastic-plastic dynamic process of the shot impact on a metallic target, and the discrete element (DE) method was used to study the multiple particles dynamics. The results obtained from the DE simulation demonstrated the capability of the method to capture realistic behaviour especially the interaction between the incoming shots with rebound shots. Careful statistical analyses of the shot impact data reveal the relationships between peening process parameters and peening quality, which are very useful for identifying those parameters which need to be controlled and regulated in order to produce a more beneficial compressive residual stress distribution within the target.