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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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Dorival, Olivier
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Topics
Publications (9/9 displayed)
- 2020Effects of dynamics and trigger on energy absorption of composite tubes during axial crushingcitations
- 2018Experimental and Numerical study of the behavior of hybrid unidirectional/woven composite laminates under impact loading
- 2018Impact damage prediction in thin woven composite laminates-Part I: Modeling strategy and validationcitations
- 2016Experimental results of medium velocity impact tests for reinforced foam core braided composite structurescitations
- 2015Effects of the stacking sequence, material nature and addition of an adhesive film on the delamination resistance of woven composite laminates in mode I and II
- 2015Experimental study of impact energy absorption by reinforced braided composite structures: Dynamic crushing testscitations
- 2015Experimental comparison of impact energy absorption by several reinforced foam composite structures
- 2014Influence of the stacking sequence and crack velocity on fracture toughness of woven composite laminates in mode Icitations
- 2014Change of scale strategy for the microstructural modelling of polymeric rohacell foams
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article
Change of scale strategy for the microstructural modelling of polymeric rohacell foams
Abstract
International audience ; In this paper a numerical model dedicated to the simulation of the mechanical behaviour of polymeric Rohacell foams is presented. The finite elements model is developed at the scale of the microstructure idealized by a representative unit cell: the truncated octahedron. Observations made on micrographs of Rohacell lead to mesh this representative unit cell as a lattice of beam elements. Each beam is assigned a brittle linear elastic mechanical behaviour in tension and an elasto-plastic behaviour in compression. The plasticity in compression is introduced as a way to mimic the buckling of the edges of the cells observed in experimental crushing tests. A contact law introduced between the beams stands for densification. A change in scale is then realized by increasing the length of the edges of the unit cell. Several computations show the ability of the proposed approach to preserve the physical degradation phenomena and the loads while drastically decreasing the computational time.