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Delamination characteristics of glare laminates containing doubler and splice features under high cycle fatigue loading

Al-Azzawi, Ahmad S. M., Kawashita, L. F. and Featherston, Carol 2016. Delamination characteristics of glare laminates containing doubler and splice features under high cycle fatigue loading. Presented at: 24th UK Conference of the Association for Computational Mechanics in Engineering, Cardiff University, Cardiff, UK, 31 March - 1 April 2016. Proceedings of the 24th UK Conference of the Association for Computational Mechanics in Engineering 31 March – 01 April 2016. ACME/Cardiff University, pp. 77-80.

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Abstract

A modified cohesive zone model (CZM) has been developed to simulate damage initiation and evolution inGlare™ Fibre-Metal Laminate (FML) specimens containing both splice and doubler features under high-cycle fatigue loading. The model computes the cohesive stiffness degradation under mixed-mode loading based on user-defined crack growth rate data and is implemented in a VUMAT subroutine for the FEA software Abaqus/Explicit. To validate the model experimental data has been obtained for a number of Glare 4B specimens containing splice and doubler features monitored using digital image correlation (DIC) to provide full-field displacement and strain data and Acoustic Emission (AE) monitoring to detect damage initiation and propagation. The model was used to predict the initiation and growth of damage in splice joints under quasi-static loading. The results were verified against the cohesive zone model available in Abaqus and then validated against experimental data on Glare specimens. The codes are currently being extended to incorporate a mixed-mode fatigue damage evolution model based on input Paris laws, which have been extracted from high cycle fatigue experiments on Glare specimens containing both splice and doubler joints.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Publisher: ACME/Cardiff University
Funders: Cardiff University
Date of First Compliant Deposit: 5 April 2016
Date of Acceptance: 1 April 2016
Last Modified: 02 Aug 2019 09:53
URI: http://orca.cf.ac.uk/id/eprint/88841

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