Numerical analysis of the strength and interfacial properties of adhesive joints with graded adherends |
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| Affiliation: | 1. State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Mechanics and Civil Engineering, School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China;2. John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA;1. Department of Mechanical and Materials Engineering, Masdar Institute, Abu Dhabi, UAE;2. Department of Engineering Science, University of Oxford, Parks Road, Oxford, UK |
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| Abstract: | The strength and interfacial behavior of single lap joints with graded adherends subjected to uniaxial tensile loading are investigated in the present paper. A bilinear cohesive zone model coupled with the finite element method is adopted to describe the damage and failure process of the adhesive layer. The peak loading, the rotation angle between the overlap of the joint and the horizontal direction, as well as the failure energy are investigated comprehensively. It is interesting to find that adopting different variation law in the graded adherends may result in varying strength of adhesive joints. By means of choosing proper material and geometry parameters of adhesive joints, the peak loading, the rotation angle and the failure energy of joints can be greatly improved. What is more, the strength of the SLJ is found to depend much more on the property of the soft part near the adhesive layer. The results should be helpful to guide the design of novel structures of adhesive joints in present and potential applications. |
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| Keywords: | Graded adherend Single lap adhesive joint Cohesive zone model Finite element method |
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