A computer-aided blank design method for the peen forming process

Peen forming is an important process for the manufacturing of integral wing skins. In order to design the initial blank shape from the three-dimensional computer model for this process, a computer-aided method is presented. Based on the assumption of small curvatures produced by peen forming, this method deals with quadrilateral mesh, hypothesised in-plane deformation, and minimising the area error of mapping. The algorithm is applied to several examples in order to confirm its validity.