Article Dans Une Revue Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences Année : 2009

Impacts on thin elastic sheets

Résumé

We study transverse impacts of rigid objects on a free elastic membrane, using thin circular sheets of natural rubber as experimental models. After impact, two distinct axisymmetric waves propagate in and on the sheet. First a tensile wave travels at sound speed leaving behind the wave front a stretched domain. Then, a transverse wave propagates on the stretched area at a lower speed. In the stretched area, geometrical confinement induces compressive circumferential stresses leading to a buckling instability, giving rise to radial wrinkles. We report on a set of experiments and theoretical remarks on the conditions of occurrence of these wrinkles, their dynamics and wavelength.

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hal-00857254 , version 1 (03-09-2013)

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Romain Vermorel, Nicolas Vandenberghe, Emmanuel Villermaux. Impacts on thin elastic sheets. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2009, 465, pp.823-842. ⟨10.1098/rspa.2008.0297⟩. ⟨hal-00857254⟩
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