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Load Ratio Effect on the Fatigue Behaviour of Adhesively Bonded Joints: An Enhanced Damage Model

Katnam, KB, Crocombe, AD, Khoramishad, H and Ashcroft, IA (2010) Load Ratio Effect on the Fatigue Behaviour of Adhesively Bonded Joints: An Enhanced Damage Model JOURNAL OF ADHESION, 86 (3). 257 - 272. ISSN 0021-8464

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Abstract

Structural adhesives are used widely in aerospace and automotive applications. However, fatigue damage in these adhesives is an important factor to be considered in the design of adhesively bonded structural members that are subjected to cyclic loading conditions during their service life. Fatigue life of adhesively bonded joints depends mainly on the fatigue load and the load ratio. A fatigue damage model is presented in this paper to include the effect of fatigue mean stresses on the failure behaviour of adhesively bonded joints. The fatigue damage model is developed using an effective strain-based approach. The model is implemented on a tapered single lap joint configuration and is validated by experimental test results. The adhesive layer in the tapered single lap joint is modelled by using a cohesive zone with a bi-linear traction-separation response. The adverse effect of increasing fatigue mean stresses on the failure behaviour of adhesively bonded joints is successfully predicted.

Item Type: Article
Additional Information: This is an electronic version of an article published in The Journal of Adhesion , 86(3), 257-272 (2010). The Journal of Adhesion is available online at: http://www.tandfonline.com/doi/abs/10.1080/00218460903462632
Uncontrolled Keywords: Science & Technology, Technology, Engineering, Chemical, Materials Science, Multidisciplinary, Mechanics, Engineering, Materials Science, Cohesive zone approach, Fatigue damage model, Mean stress effect, Structural adhesives, Tapered single lap joint, Traction-separation response, FINITE-ELEMENT APPROACH, LOW-CYCLE FATIGUE, MEAN STRESS, LIFE, COMPOSITES, STEEL
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Divisions: Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Depositing User: Symplectic Elements
Date Deposited: 24 Sep 2012 19:42
Last Modified: 23 Sep 2013 19:38
URI: http://epubs.surrey.ac.uk/id/eprint/716730

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