Development and validation of finite elements for tubular bonded joints in composite structures

摘要

Finite Element Analysis (FEA) has been carried out to obtain the interfacial shear and normal stresses in a tubular bonded joint by developing a six node isoparametric element for the adhesive layer. The adhesive layer is assumed to be relatively thin and behaves elastically as simple tension-compression springs and shear springs connecting the adherends. The peak normal and shear stresses found in the adhesive layer at the edges of the joint are due to stress singularity. In order to examine the adequacy of the developed finite elements for the tubular bonded joints, the present finite element analysis results are compared with the existing analytical solution for simple geometries. Further studies are made to examine the effects of material properties of the composite adherends in tubular bonded joint configurations.