AI Article Synopsis
- A new technique is introduced for tracking the changing shape of a moving surface using Lagrangian coordinates while keeping calculations based on the original surface's geometry.
- The method effectively addresses three nonlinear elasticity issues: the bulging of a thin plate, the buckling of a spherical shell, and capillary wrinkles in thin films.
- In the capillary wrinkle study, adding a gravitational potential-energy term enhances the accuracy of the model's predictions compared to experimental results.
Article Abstract
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 Föppl-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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| http://dx.doi.org/10.1103/PhysRevE.80.021602 | DOI Listing |
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