Article dans une revue avec comité de lecture

An analytic homogenisation model for shear–torsion coupling problems of double corrugated core sandwich plates
Journal of Composite Materials, Volume 47, pp 1327-1341, May 2013.

par   Pham Tuong Minh DUONG , Boussad ABBES , Yu Ming LI , Abdelkader-Djilali HAMMOU , M. Makhlouf , Ying Qiao GUO

Résumé :


The homogenisation of shear–torsion behaviours for orthotropic sandwich plates such as corrugated cardboards is a difficult task, even numerically. We decompose the plate torsion into two beam torsions in order to analytically calculate its torsion rigidity. A simple but fairly accurate model based on Bredt theory is proposed for the torsion rigidity of double corrugated core plates. The in-plane shear rigidity is also analytically determined using beam theory. For non-symmetric plate sections, an analytical formulation is developed for the shear–torsion coupling problem. Very good agreement is obtained between the three-dimensional shell simulations and our fast H-model for a non-linear buckling problem coupling the membrane-shear-bending-torsion effects.

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