Dynamic response of tubular joints with an annular void subjected to a harmonic axial load

Dynamic responses of adhesively bonded tubular joints subjected to a harmonic axial load were evaluated with the use of a shear lag model. Adherents were assumed to be elastic and the adhesive was taken to be a viscoelastic material. Effects of tubular joint geometries, material properties and adhesive properties on the dynamic response of the system were investigated. The results showed that the system response was sensitive to the adhesive loss factor. The system response was little affected by the presence of a central annular void in the bond area for void size less than 40% of the overlap length. This was especially pronounced for joints using adhesives with a larger loss factor (viscous damping). The distribution of shear stress amplitude in the joint area was obtained. The maximum shear stress was confined to the edge of the overlap for all applied loading frequencies. For the adhesive and adherents’ properties and geometries investigated, the maximum shear stress amplitude in the joint area was little affected by the presence of a central annular void covering up to 40% of the overlap length. However, for a void larger than 40% of the overlap length, the maximum shear stress might increase or decrease with an increase in the void size. This was related to the applied loading frequency and the changes in the system resonance frequencies. r 2002 Elsevier Science Ltd. All rights reserved.