Analytical and Numerical Results for an Adhesively Bonded Joint Subjected to Pure Bending

Abstract

A one-dimensional, semi-analytical methodology that was previously developed for evaluating adhesively bonded joints composed of anisotropic adherends and adhesives that exhibit inelastic material behavior is further verified in the present paper. A summary of the first-order differential equations and applied joint loading used to determine the adhesive response from the methodology are also presented. The method was previously verified against a variety of single-lap joint configurations from the literature that subjected the joints to cases of axial tension and pure bending. Using the same joint configuration and applied bending load presented in a study by Yang, the finite element analysis software ABAQUS was used to further verify the semi-analytical method. Linear static ABAQUS results are presented for two models, one with a coarse and one with a fine element meshing, that were used to verify convergence of the finite element analyses. Close agreement between the finite element results and the semi-analytical methodology were determined for both the shear and normal stress responses of the adhesive bondline. Thus, the semi-analytical methodology was successfully verified using the ABAQUS finite element software and a single-lap joint configuration subjected to pure bending. Nomenclature

Numerical simulation analysis as a tool to identify areas of weakness in a turbine wind-blade and solutions for their reinforcement

“…In this model, we have considered adhesive as isotropic material [38]. Thin layer located between the upper and lower section is modeled with shell element from root to tip, shown in Fig.…”

“…Both adherends are considered orthotropic material. The adhesive material is considered isotropic material, as the mechanical properties same in all directions [38,41]. The adherends are assumed to act as linear elastic cylindrical bend plates under plain strain conditions.…”

“…Stickler [35] studied the numerical analysis as well as the effective procedure to bond composite structures. Other papers also discuss damage of composite adhesive bonding [28,38,26,17,41]. The main scope of manufacturers is to reduce the blade maintenance cost for offshore wind turbine blades, because maintenance expenses increase the total cost of energy in offshore installations compared to their onshore counterparts [18]).…”

A bonded joint finite element for a symmetric double lap joint subjected to mechanical and thermal loads

“…When this is the case, it is a common practice to create several costly meshes at different densities in order to verify that the stress results have converged. Smeltzer and Lundgren [32] is a recent example of this practice.…”

“…Despite their availability, the listed techniques are expensive and require extensive user expertise. There are ongoing efforts to develop rapid analysis techniques [30][31][32], a key enabling technology for vehicle designers.…”