Une approche expérimentale et numérique dédiée à l'identification des propriétés mécaniques des âmes nids d'abeilles Nomex®

Abstract : The mechanical properties of Nomex honeycomb cores are determined through a combined experimental and numerical approach. The proposed method relies on out-of-plan shear tests on four blocks specimens and on standard ASTM compressive tests. These mechanical tests are analyzed thanks to finite element simulations involving randomly distributed geometric defects and failure due to instabilities. The full three dimensional mechanical properties of Nomex honeycomb cores are then computed with the prototype software NidaCore by inverse scattering on available data. Moreover, the shape of failure of Nomex cores are predicted by the use of a crossed method involving experimental results and numerical simulations and based on the understanding of local instability mechanisms.
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Laurent Gornet, Gilles Marckmann, Steven Marguet, Syed Kamran-Ali, Jean Regoin. Une approche expérimentale et numérique dédiée à l'identification des propriétés mécaniques des âmes nids d'abeilles Nomex®. Journées Nationales sur les Composites (JNC), Jun 2007, Marseille, France. ⟨hal-01391588⟩

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