Stress-Strain Analysis of Single-Lap Composite Joints Under Tension

Abstract

Based on the laminated anisotropic plate theory, an analytical model is proposed to determine the stress and strain distributions of adhesive-bonded composite single-lap joints under tension. The laminated anisotropic plate theory is applied in the derivation of the governing equations of the two bonded laminates. The entire coupled system is then obtained through assuming the peel stress between the two laminates. With the Fourier series and appropriate boundary conditions, the solutions of the system are obtained. Based on the proposed model, the stress and strain distributions of the adherends and the adhesive can be predicted. The coupling effect between the external tension and the induced bending due to the asymmetry of composite laminates are also included. The two adherends can also have different materials and properties. An existing FEA code, “ALGOR,” is used as a comparison with this proposed analytical model. Results from this developed model are also compared with Goland and Reissner’s as well as Hart-Smith’s papers.

Adhesively bonded joints in composite materials: An overview

“…Yang and Pang [92,93] also derived analytical models by using classical laminated plate theory with first-order shear deformation to analyse symmetric and asymmetric single-lap joints subjected to tensile and bending loading. Their approach correlated the asymmetry of the adherend laminates as well as the effects due to the transverse shear deformation.…”

Analytical solutions for nonlinear analysis of composite single-lap adhesive joints

“…Stress analysis and failure prediction for composite single-lap joint (CSLJ) have been studied by a number of authors [7][8][9][10][11][12]. The GR and HS analytical solutions of the edge moment factor for SLJs, with isotropic adherends, have been simply extended to CSLJs.…”

Strain Energy Release Rate Analysis of Adhesive-Bonded Composite Joints with a Prescribed Interlaminar Crack

“…Adhesive and cohesive failure analyses and also fracture mechanics of lap joints have been vastly investigated [38][39][40][41][42][43][44][45][46][47][48][49]. Nevertheless, out-of plane failure analyses of adhesive-bonded joints have not been inquired sufficiently.…”

“…Yang and Pang [44] derived an analytical model that provided the stress distributions of adhesive-bonded singlelap composite joints subjected to axial tension. Huang et al [45] and Yang et al [46] also derived an elastic-plastic model for adhesive-bonded single-lap composite joints.…”