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This and the next 3 images are from:
Juan de Dios Rodríguez-Ramírez, Bruno Castanié, and Christophe Bouvet (Institut Clément Ader (ICA), Université de Toulouse, CNRS UMR 5312-INSA-ISAE-Mines Albi- UPS, 3 Rue Caroline Aigle, 31400 Toulouse, www.institut-clement-ader.org),
“Analysis of nonlinear behavior on honeycomb cores”, 21st International Conference on Composite Materials, Xi’an, China, 20-25 August 2017
ABSTRACT: This work presents the results of 21 shear tests on three types of honeycomb cores: the HRH-78- 3/16-3.0, HRH-10-3/16-6.0 and an aluminium honeycomb core made of 5052 alloy with 3/8” cells. First, a benchmark of the different designs for shear testing of the honeycomb cores is made. Then, several double lap specimens were fabricated and tested while a 3D image correlation system was used to record the tests. An experimental analysis of the post-buckling phenomena of the HRH-78 W is presented. An artificial neural network is developed and used to visually identify the buckles of the test specimens. Finally, a detailed description of the behaviour of the structure including the postbuckling scenario is presented.
References listed at the end of the paper:
. [1] P. Bunyawanichakul, B. Castanié, and J.-J. Barrau, “Non-linear finite element analysis of inserts in composite sandwich structures,” Compos. Part B Eng., vol. 39, no. 7–8, pp. 1077– 1092, Oct. 2008.
. [2] P. Bunyawanichakul, B. Castanie, and J. J. Barrau, “Experimental and numerical analysis of inserts in sandwich structures,” Appl. Compos. Mater., vol. 12, no. 3–4, pp. 177–191, 2005.
. [3] R. Seemann and D. Krause, “Numerical Modeling of Nomex Honeycomb Sandwich Cores at Meso-Scale Level,” Compos. Struct., 2016.
. [4] HexWeb, “HexWeb Honeycomb Attributes and Properties.” 1999.
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