The Influence Of Controlled Parameters On Ultrasonic Peening Forming By Numerical Simulation

In this paper, a three-step finite element model for accurate simulation of Ultrasonic Peening Forming (UPF) process is proposed with the computer assisted analyses. First, an explicit FEA model was built with ABAQUS to simulate the impact process, in which the distributions of resulting residual stress inside the simplified sub-model could be obtained. Then, by using a C language program, the resulting stress data for centre-impact zone of the sub-model was extended to the full-size complete target plate. Finally, the arc height and the curvature radii of the new target plate in transverse and longitudinal directions are calculated by an implicit FEA model in ABAQUS. Numerical results of the peening process reveal the influence of the different controlled parameters on the residual stress profiles as well as the resultant curvature deformation of target plate. The experiment related to the thickness of the plate is carried out. This numerical simulation impact model could be used for predicting the residual stress distribution and panel deformation, providing another alternative for investigating and optimizing the UPF process.