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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Loukaides, Evripides G.
University of Bath
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024Resistance-welded thermoset compositescitations
- 2024An analytical model for wrinkle-free forming of composite laminatescitations
- 2024Auxetic fixation devices can achieve superior pullout performances compared to standard fixation conceptscitations
- 2022FRACTURE TOUGHNESS AND PERFORMANCE OF RESISTANCE-WELDED AND CO-BONDED THERMOSET/THERMOPLASTIC POLYMER COMPOSITE HYBRID JOINTS
- 2022Producing isolated shrink corners by folding-shearingcitations
- 2019Stacking sequence selection for defect-free forming of uni-directional ply laminatescitations
- 2019Additive manufacture of multistable structurescitations
- 2017Ply interface angles to promote automated forming of aerospace structures
- 2015Multistable grid and honeycomb shellscitations
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article
An analytical model for wrinkle-free forming of composite laminates
Abstract
Double Diaphragm Forming (DDF) of 3D shapes significantly increases production rates for laminated composite parts when compared with Automated Fibre Placement. However, it is prone to the occurrence of wrinkling defects, which can lead either to concession of part strength or expensive and wasteful part scrappage. Finite element simulation of the process is computationally costly and not suited to preliminary design for manufacture. In this work a novel analytical model is presented, based on obtaining the wrinkle profile via energy minimisation using a Rayleigh–Ritz approach, which enables rapid mechanics-based assessment of formability for the design of wrinkle-free composite products. The new modelling approach is validated against eight experimental DDF forming trials performed over C-shaped tools with double curvature using both dry Non-Crimped Fabric and unidirectional prepreg material. The model successfully predicts the three cases for which wrinkling is absent and the five cases where it occurs.