Finite Element Impact Modelling for Shot Peen Forming

Author:  Wang, Platts, Levers
Source:  Conf Proc: ICSP-8 Sept. 16-20, 2002 Garmisch-Partenkirchen, Germany
Doc ID:  2002070
Year of Publication:  2002
Authors Tao Wang, Jim Platts University of Cambridge, Cambridge, UK Andrew Levers Airbus UK Ltd., Chester, UK 1 Abstract A finite element analysis of multiple random impacts involved in shot peen forming is presented. An explicit dynamic algorithm for modelling up to 1000 impacts and a static algorithm for spring-back simulatiion are combined to achieve a final curved shape after shot peening on a small sized aluminium 2024-T351 sample. The development of the plastic zones, residual stresses, and the final deflection is given by simulating the experimental conditions. The comparison between simulation results and experiments shows that the finite element impact modelling is able to investigate the macroscopic effects (e.g. curvature) of shot peening as well as the microscopic effects (e.g. local plasticity and residual stresses).

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