Lagrangian Crumpling Equations

Details Lagrangian Crumpling Equations Lagrangian Crumpling Equations

2009-01-27

arxiv.org/abs/0901.4166v1

Physics

Condensed Matter

Soft Condensed Matter

15 pages, no figures

Scientific paper

A concise method for following the evolving geometry of a moving surface using Lagrangian coordinates is described. All computations can be done in the fixed geometry of the initial surface despite the evolving complexity of the moving surface. The method is applied to three problems in nonlinear elasticity: the bulging of a thin plate under pressure (the original motivation for Foeppl-von Karman theory), the buckling of a spherical shell under pressure, and the phenomenon of capillary wrinkles induced by surface tension in a thin film. In this last problem the inclusion of a gravitational potential energy term in the total energy improves the agreement with experiment.

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