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Finite element analysis of catastrophic failure of dynamically-loaded countersunk composite fuselage joints
Date
2015
Abstract
Accurate models of dynamic structural failure are important for crashworthiness studies. To date, catastrophic failure of dynamically-loaded composite bolted joints has been studied using global or stacked shell element models. In this paper, high-fidelity (three-dimensional solid) explicit FE models are used to simulate catastrophic failure of countersunk composite fuselage joints. While current state-of-the-art 3D modelling approaches focus almost exclusively on the prediction of composite damage, this study also investigates the treatment of fastener damage. Fastener fracture is a common catastrophic joint failure mode, particularly in joints designed to initially fail in bearing. A Johnson-Cook material model and cohesive elements were used to predict plasticity, damage and fracture of the titanium (Ti-6Al-4V) fastener. Although a model calibration was required, due to the complex interaction of model parameters, numerical results demonstrate key trends of experiments and provide a starting point for the development of more predictive approaches for simulating fastener failure
Supervisor
Description
peer-reviewed
Publisher
Elsevier
Citation
Composite Structures; 133, pp. 1198-1208
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Files
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Egan_2015_composite.pdf
Adobe PDF, 2.59 MB
Funding code
Funding Information
Irish Research Council (IRC), Science Foundation Ireland (SFI)
Sustainable Development Goals
External Link
Type
Article
Rights
https://creativecommons.org/licenses/by-nc-sa/1.0/