Effect of Metal–Fiber Shear Interaction on Curing Deformation of Fiber Metal Laminates

Control of geometric dimension has been a major concern in the manufacturing process of fiber metal laminates (FMLs). In this paper, an analytical model has been proposed to predict the room-temperature shape of FMLs. Firstly, it is successful for using the proposed model to derive the process-induced stress due to the slipping behavior between the metal ply and the prepreg ply in the temperature rising phase. The slipping behavior between the metal ply and the prepreg ply was introduced by an interfacial shear stress which is applied to tailor the magnitude of interaction force. The analytical results show that the residual stresses in metal ply are almost constant along the metal thickness, while the distribution of residual stresses exhibits nonlinear characteristics through the thickness direction in the prepreg ply. Secondly, the proposed analytical solution based on the modification of the model presented by Dano and Hyer has been used to calculate the final curvature of FMLs by considering the process-induced stress developed both in the process of heating and cooling. The processing deformations results calculated by this model are good agreements with experimental data from the literature.