| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 829400 | Materials & Design (1980-2015) | 2014 | 9 Pages |
•3D dynamic FE scheme with FSI capability is developed to model damage in CFRP panel.•A radius of curvature of CFRP panel is optimised to improve its blast resistance.•Discrete deformation modes of CFRP laminate are analysed and their severity explained.
Numerical studies were conducted to investigate the optimum curvature of a carbon fibre-reinforced polymer (CFRP) panel that would provide an improved blast resistance. A dynamic finite-element (FE) model that incorporates fluid–structure interaction was developed to evaluate the response of these panels to blast in commercial finite-element software ABAQUS/Explicit. Previously reported experimental data by authors were utilised to validate a FE model, where a shock-tube apparatus was utilised to apply a controlled shock loading to quasi-isotropic composite panels with different radii of curvature. A three-dimensional digital image correlation (DIC) technique coupled with high-speed photography was employed to measure out-of-plane deflections and velocities, as well as in-plane strains at the back face of panels. Macroscopic post-mortem analysis was performed to compare the deformation in these panels. The numerical results were compared to the experimental data and demonstrated a good agreement. The validated FE model was further used to predict the optimal curvature of CFRP panel with the aim to improve its blast-mitigation characteristics.
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