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Static and dynamic behaviour of a 3D periodic structure

Rishmany, Jihad and Renault, Lionel and Mabru, Catherine and Chieragatti, Rémy and Rezaï-Aria, Farhad Static and dynamic behaviour of a 3D periodic structure. (2006) In: 16th European Conference of Fracture : ECF 16 Failure Analysis of nano and engineering materials and structures, 3 July 2006 - 7 July 2006 (Alexandroupolis, Greece).

(Document in English)

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Official URL: http://dx.doi.org/10.1007/1-4020-4972-2_302


This contribution deals with the assessment of static and dynamic behavior a 3D-periodic structure. Equivalent Young and shear moduli are evaluated respectively via a spring-network calculation performed on a representative volume element (RVE)of the structure and an energy approach. To assess the accuracy of the two methods, FE simulations are performed, and tensile experiments are conducted on specimens cut out from 3D-structure panels. Results show disagreement for stiffness values along y-direction. This is thought to be due to stiffness variation between RVE's due to boundary conditions. A new analytical/numerical approach is proposed taking into consideration the presence of different types of boundary conditions on RVE's. Static results are further used as an input for FE investigations of the dynamic behavior of the structure. Two models are proposed: a) homogeneous and b) laminated models. Vibration tests are performed on different specimens and fundamental frequencies are noted. Results for both models correlate well with experimental data. However, the homogeneous model is limited to low frequencies.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Université de Toulouse > Ecole nationale supérieure des Mines d'Albi-Carmaux - IMT Mines Albi (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
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Deposited On:20 May 2008 08:39

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