Mechanical analysis of composite plates adhesively joined with different single-lap techniques under bending loading

Abstract In this study, composite plates adhesively joined using single-lap joint without intermediated material (SLJ) and intermediated material (IM-SLJ) subject to bending loading were investigated via finite element analysis. DP 410 type adhesive was used. Composite parts and intermediate material were preferred as T700 carbon/epoxy. Numerical analyses were carried out using ANSYS 14.5 software package, in which the finite element method was taken into account. Failure situations for adhesive and composites were examined by the von-Mises failure criteria and the Tsai-wu failure criteria, respectively. Firstly, the failure loads for each parameter situation were determined. The equivalent stresses of the critical stress lines on adhesive layers were examined and critical stresses line were determined for length and width of adhesive layers. Shear, normal, and von-Mises stresses were investigated at obtained failure load for each parameter of SLJ and IM-SLJ. The von-Mises on the critical stress lines were compared for different overlap width and length of SLJ and IM-SLJ. The effects of joint techniques, orientation angles, and overlap dimensional were investigated on adhesive layer, and joint techniques were compared about advantages. A different study from the literature was carried out to compare the mechanical behavior of SLJ and IM-SLJ joining techniques.