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Interfacial Stress Analysis of Adhesively Bonded Lap Joint

The use of adhesively bonded joints in place of traditional joining techniques such as bolted or rivet joints is becoming greatly popular in recent years. Interfacial stress in the adhesive is critical to the strength of adhesively bonded joints. It is necessary to predict the interfacial stresses a...

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Autores principales: Her, Shiuh-Chuan, Chan, Cheng-Feng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6695614/
https://www.ncbi.nlm.nih.gov/pubmed/31357689
http://dx.doi.org/10.3390/ma12152403
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author Her, Shiuh-Chuan
Chan, Cheng-Feng
author_facet Her, Shiuh-Chuan
Chan, Cheng-Feng
author_sort Her, Shiuh-Chuan
collection PubMed
description The use of adhesively bonded joints in place of traditional joining techniques such as bolted or rivet joints is becoming greatly popular in recent years. Interfacial stress in the adhesive is critical to the strength of adhesively bonded joints. It is necessary to predict the interfacial stresses accurately to ensure the safety of joints. In this work, an analytical model is explicitly presented to evaluate the stresses in a double lap joint. The equilibrium equations in the adhesive overlap region are derived on the basis of elasticity theory. The governing equations are presented in terms of shear and peel stresses in the adhesive. Analytical solutions are derived for the shear and peel stresses, which are considered to be the main reason for the failure of the double lap joint. To verify the analytical solutions, the finite element method is conducted using the commercial package ANSYS. Results from the analytical solution agree well with finite element results and numerical investigations available in the literature. The effect of the adhesive thickness, shear modulus, adherend Young’s modulus and bonding length on the shear and peel stresses in the adhesive of the double lap joint are studied. Numerical results demonstrate that both the maximum shear and peel stress occur at both ends of the bonding region. The maximum values of the shear and peel stresses increase as the adhesive thickness decreases and as the adhesive shear modulus increases provided that the adhesive thickness is sufficiently small. The simplicity and capability to obtain analytical expressions of the shear and peel stresses for double lap adhesive bonded joints makes the proposed analytical model applicable for the stress analysis and preliminary structural design.
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spelling pubmed-66956142019-09-05 Interfacial Stress Analysis of Adhesively Bonded Lap Joint Her, Shiuh-Chuan Chan, Cheng-Feng Materials (Basel) Article The use of adhesively bonded joints in place of traditional joining techniques such as bolted or rivet joints is becoming greatly popular in recent years. Interfacial stress in the adhesive is critical to the strength of adhesively bonded joints. It is necessary to predict the interfacial stresses accurately to ensure the safety of joints. In this work, an analytical model is explicitly presented to evaluate the stresses in a double lap joint. The equilibrium equations in the adhesive overlap region are derived on the basis of elasticity theory. The governing equations are presented in terms of shear and peel stresses in the adhesive. Analytical solutions are derived for the shear and peel stresses, which are considered to be the main reason for the failure of the double lap joint. To verify the analytical solutions, the finite element method is conducted using the commercial package ANSYS. Results from the analytical solution agree well with finite element results and numerical investigations available in the literature. The effect of the adhesive thickness, shear modulus, adherend Young’s modulus and bonding length on the shear and peel stresses in the adhesive of the double lap joint are studied. Numerical results demonstrate that both the maximum shear and peel stress occur at both ends of the bonding region. The maximum values of the shear and peel stresses increase as the adhesive thickness decreases and as the adhesive shear modulus increases provided that the adhesive thickness is sufficiently small. The simplicity and capability to obtain analytical expressions of the shear and peel stresses for double lap adhesive bonded joints makes the proposed analytical model applicable for the stress analysis and preliminary structural design. MDPI 2019-07-28 /pmc/articles/PMC6695614/ /pubmed/31357689 http://dx.doi.org/10.3390/ma12152403 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Her, Shiuh-Chuan
Chan, Cheng-Feng
Interfacial Stress Analysis of Adhesively Bonded Lap Joint
title Interfacial Stress Analysis of Adhesively Bonded Lap Joint
title_full Interfacial Stress Analysis of Adhesively Bonded Lap Joint
title_fullStr Interfacial Stress Analysis of Adhesively Bonded Lap Joint
title_full_unstemmed Interfacial Stress Analysis of Adhesively Bonded Lap Joint
title_short Interfacial Stress Analysis of Adhesively Bonded Lap Joint
title_sort interfacial stress analysis of adhesively bonded lap joint
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6695614/
https://www.ncbi.nlm.nih.gov/pubmed/31357689
http://dx.doi.org/10.3390/ma12152403
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