Improved theoretical solutions for adhesive lap joint

Improved theoretical solutions for adhesively bonded single- and double-lap joints are proposed. The classical theories ofVolkersen/de Bruyneʹs solution for double-lap joints, Volkersenʹs, Goland and Reissnerʹs solutions for single-lap joints, which neglect adherend shear deformations, are used as the bases for the present analyses. The assumption of linear shear stress distributions through the thickness of the adherends is adopted in the analyses. The improved solutions are justified by comparing with the original theoretical solutions, and experimental and numerical results. It is shown that the improved solutions provide a better prediction for the adhesive shear distributions and maximum values, particularly in the case of fiber composite adherends. The effects of the adherend shear deformations on the adhesive shear distributions are presented and the relevant parameters are identified and discussed. © 1998 Elsevier Science Ltd.