Comptes Rendus
no. 4
Patterns and dynamics: homage to Pierre Coullet / Formes et dynamique : hommage à Pierre Coullet
A brittle material with tunable elasticity: Crêpe paper
Nicolas Vandenberghe1  ; Emmanuel Villermaux1
1 Aix Marseille Université, CNRS, Centrale Marseille, IRPHE, Marseille, France
Comptes Rendus. Mécanique, Volume 347 (2019) no. 4, pp. 382-388.

We study the mechanical response, and tearing features of crêpe paper, a two-dimensional, very anisotropic material, with one direction much less stiff than the other one. Depending on how the soft direction has been pre-stretched or not, the apparent Young modulus of the material can be varied over a broad range, while its fracture energy remains unaltered. The classical tearing concertina problem shows that a macroscopic measurement (the shape of the teared region) provides a direct access to the fracture properties of the material (effective Young's modulus, and fracture energy). The overall discussion is conducted in the frame of Griffith's theory of fracture.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crme.2019.03.013
Mots clés : Patterns, Fracture
Nicolas Vandenberghe 1 ; Emmanuel Villermaux 1

1 Aix Marseille Université, CNRS, Centrale Marseille, IRPHE, Marseille, France 
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Nicolas Vandenberghe; Emmanuel Villermaux. A brittle material with tunable elasticity: Crêpe paper. Comptes Rendus. Mécanique, Volume 347 (2019) no. 4, pp. 382-388. doi : 10.1016/j.crme.2019.03.013. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2019.03.013/

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