帽形件弯曲及其弹复影响因素的定量解析

n analytical model of cap-shape bending is proposed in this paper based on plane strain condition and bending theory of sheet metal. The model takes into account of the spring back of the harden ability, anisotropy and elastic deformation of sheet metal. The process of Cap-shape bending of wide sheet metal is analyzed based the model in this paper, obtains calculate formula of bending moment, bending stroke, bending force and springback angle , and analyzes the factors which influence bending force and springback. Solution of theory is compared to experiment and simulation. It provides the theory base for the confirmation of parameter identification and prediction model of the import layer and export layer in intelligent control of cap-shape bending of wide sheet metal.