Supersonic Rupture of Rubber

Details Supersonic Rupture of Rubber Supersonic Rupture of Rubber

2005-04-24

arxiv.org/abs/cond-mat/0504613v1

Physics

Condensed Matter

Soft Condensed Matter

47 pages, 13 Figures

Scientific paper

10.1016/j.jmps.2005.10.002

The rupture of rubber differs from conventional fracture. It is supersonic, and the speed is determined by strain levels ahead of the tip rather than total strain energy as for ordinary cracks. Dissipation plays a very important role in allowing the propagation of ruptures, and the back edges of ruptures must toughen as they contract, or the rupture is unstable. This article presents several levels of theoretical description of this phenomenon: first, a numerical procedure capable of incorporating large extensions, dynamics, and bond rupture; second, a simple continuum model that can be solved analytically, and which reproduces several features of elementary shock physics; and third, an analytically solvable discrete model that accurately reproduces numerical and experimental results, and explains the scaling laws that underly this new failure mode. Predictions for rupture speed compare well with experiment.

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