VIBRATION OF BONDED LAMINATED LAP-JOINT PLATES USING ADHESIVE INTERFACE ELEMENTS

An isoparametric adhesive interface element is used in the vibration a nalysis of adhesively bonded structures. It is assumed that transverse shear and peel stresses prevail in the adhesive layer. The analyses a rticulate separate responses of the upper and lower adherends and the adhesive. The natural frequencies of laminated plates with a lap-joint are found to be reasonable when compared with the results for plates without joints. The present element, together with the eight-node isop arametric plate element based on a first order shear deformation theor y used to model the upper and lower adherends, is found to be effectiv e in solving free vibration problems of adhesively bonded laminated la p-joints.