An analytical model of stresses in adhesive bonded interface between steel and bamboo plywood

Abstract

a b s t r a c tBamboo-steel composite structure is a newly developed type of structure. Structural adhesive is used to combine bamboo plywood with cold-formed thin-walled steel. Hence, the mechanical performance of the bonded interface between steel and bamboo plywood is crucial to the Bamboo-steel composite structure. To investigate the mechanical performance of the adhesive bonded interface, an analytical model for unbalanced adhesive bonded joint is proposed, and explicit closed-form expressions for the shear stress and peel stress in the adhesive layer, bamboo plywood, steel sheet and their interfaces are derived. The stresses distribution predicted by this model indicates that the initial debonding is caused by the shear stress and peel stress at the interface between bamboo plywood and adhesive layer, and is located in a tiny area close to the end of overlap. Analysis of the variables influencing the stresses distribution suggests increasing the section stiffness of bamboo plywood has a significant effect on reducing the concentration of stresses.

An Elastic Interface Model for the Delamination of Bending-Extension Coupled Laminates

“…The latter are increasingly used to model delamination associated with large-scale bridging and other non-linear damage phenomena [29][30][31][32][33][34][35][36][37][38]. A parallel line of research concerns adhesively-bonded joints, for which models of growing complexity have been proposed in the literature [39]: from elastic interface models [40][41][42][43][44][45][46] to non-linear cohesive-zone models [47,48].…”

Design Analysis of Adhesively Bonded Structures

“…Moreover, the strength-of-material solution of Goland and Reissner [2] was restricted to balanced structures—That is, structures in which the adherends are identical in geometry and materials—For which the resultant differential equations for the shear and the transverse stresses in the adhesive are uncoupled and can be solved with relative ease. Delale et al (1981) [8], Bigwood and Crocombe (1989) [9], Liu et al (2014) [11], Zhao et al (2011) [16], and Zhang et al (2015) [17] have analysed unbalanced structures experiencing arbitrary edge loading such that the differential equations are heavily coupled. The resultant closed-formed solutions are immensely chunky and complex.…”