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Issue 34, 2013
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Geometry and fragmentation of soft brittle impacted bodies

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Abstract

Some mechanisms of shape selection and fragmentation patterns of impacted or strongly solicited elastic bodies of simple geometry are reviewed. By strongly solicited we mean objects whose shape undergoes order one deformations, a situation typically encountered with soft bodies, possibly leading to fracture. We are particularly interested in the development of elastic instabilities and their relevance to interpret fragmentation experiments. We review how the shape of elastic slender objects like rods and membranes is affected by buckling instabilities when impacted, and how brittle sheets break through a well-defined pattern of cracks. Central to the understanding of this pattern is the concept of optimal fragmentation. The crack pattern of thin elastic bodies, including the diverging concertina tearing, the perforation of a thin sheet by a cone and the star shape pattern of impacted windows are optimal objects, ruled by a balance between stored elastic energy and surface creation energy.

Graphical abstract: Geometry and fragmentation of soft brittle impacted bodies

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Article information


Submitted
19 Mar 2013
Accepted
23 May 2013
First published
24 May 2013

Soft Matter, 2013,9, 8162-8176
Article type
Review Article

Geometry and fragmentation of soft brittle impacted bodies

N. Vandenberghe and E. Villermaux, Soft Matter, 2013, 9, 8162
DOI: 10.1039/C3SM50789K

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