Finite Element Simulation of Shot Peen Forming

Author:  Zang
Source:  Conf Proc: ICSP-8 Sept. 16-20, 2002 Garmisch-Partenkirchen, Germany
Doc ID:  2002072
Year of Publication:  2002
Abstract:  
Author Yuansong Zeng Beijing Aeronautical Manufacturing Technology Research Institute, Beijing, P.R. China 1 Abstract In this paper, both the impact model and the forming process simulation of the shot peen forming are introduced. In the impact model, effects of the shot diameter and velocity on the value and depth of the compressive stress and plastic layer are analyzed with dynamic explicit finite element method (FEM). A new equivalent thermal loading method is presented for the simulation of the shot peen forming process. The deformation of the standard Almen Strip and a wing skin with ribs are simulated with the method using static implicit FEM software. Results show that the method is very effective if the relationships between thermal loads and the shot peening strength are suitably set up.