MATEC Web Conf.
Volume 283, 2019The 2nd Franco-Chinese Acoustic Conference (FCAC 2018)
|Number of page(s)||4|
|Section||Vibroacoustics and Noise Reduction|
|Published online||28 June 2019|
Vibration behaviour of a bio-composite sandwich with auxetic core
1 Laboratoire d’acoustique de l’université du Mans (LAUM UMR CNRS 6613) Le Mans Université, Av. O. Messiaen, 72085 Le Mans Cedex 9, France
2 Laboratoire de recherche de Mécanique, Modélisation et Production (LA2MP) Ecole Nationale d’Ingénieurs de Sfax, Département Génie Mécanique, Route Soukra, 3038 Sfax, Tunisie
* Corresponding author: firstname.lastname@example.org
This paper describes the flexural vibration and damping performances of an eco-composite sandwich structure with re-entrant honeycomb core. The main objective of this study is to analyse the effect of flax fibre reinforcement composite and the densities of the auxetic core on the dynamic properties of the sandwich structures. The damping properties and the sandwich stiffness are determined in bending beams for different free lengths in a clamped-free configuration. Firstly, the dynamic properties of the skins were investigated in order to develop the evolution of mechanical properties as well as damping coefficient for each material. Then, the same characterization was tested on the sandwich structures with different core densities. The results obtained showed that both core densities and flax fibre as reinforcement plays a major role on the dynamic properties of the sandwich composite structures.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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