论文部分内容阅读
Based on the elastic-plastic large deformation finite element formulation as well as the shell element combined discrete Kirchhoff theoretical plate element (DKT) with membrane square element, deep-drawing bending springback of typical U-patt is studied.At the same time the springback values of the drawing of patts’ unloading and trimming about the satellite aerial reflecting surface are predicted and also compared with those of the practical punch.Above two springbacks all obtain satisfactory results, which provide a kind of effective quantitative pre-prediction of springback for the practical engineers.