Analysis of Full-Ranged Failure Process of Bonded Pipe Joints Under Tension

Abstract

The mechanical properties of pipe joints are of vital importance to the performance of pipe structures. In order to further understand the whole failure process of adhesive pipe joints to maintain their good condition subjected to tensile loads, the analytical solutions are deduced in this paper, along with the parameter analysis by numerical simulations. A concise rigid-softening cohesive model was adopted to characterize the deformation of the interface. The whole failure process divided into different sections was discussed in detail and closed-form solutions of slip and shear stress were obtained. The finite element method (FEM) model for the bonded pipe joints under certain situations was established using commercial software ABAQUS, and the analytical and FEM results were accordant. The mechanism of shear stress transfer, the growth regulation of interface cracks and the mechanical performance of the joints under tensile loads were quantitatively obtained. These outcomes may help for the design, application and reinforcement of bonded pipe joints and can be compatible to other orthotropic materials.