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Journal of Adhesion Science and Technology, Vol.14, No.6, 879-893, 2000
Shear and peel stress analysis of an adhesively bonded scarf joint
The shear and peel stress distributions in a scarf joint made of two isotropic adherends with blunt adherend tips are analysed using a linear elastic analysis. The limits of the analysis with respect to adherend tip thickness have been investigated. A finite difference method is used to solve the differential equations for the sheer and peel stress distributions over the joint. The boundary conditions used limit the analysis to the two adherends having the same thicknesses, lengths, and material properties. The adherends are modelled as plates with extensional and bending stiffnesses bonded together with an elastic interlayer. The stresses across the adhesive layer are assumed to be constant. The current analysis applied to cases known from the literature shows good agreement with the shear stresses but the peel stresses are overestimated.
Keywords:adherend bending;peel stresses;adherend tip thickness;finite difference method;stress analysis;adhesive joint