Abstract
We develop a finite element method for a large deformation membrane elasticity problem on meshed curved surfaces using a tangential differential calculus approach that avoids the use of classical differential geometric methods. The method is also applied to form finding problems.
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Notes
Henceforth, we use the notation \(\{\bullet \}\) to indicate an implicit function.
Note that the first Piola Kirchhoff stress tensor is a two-point tensor with “legs” in both current and reference configurations.
For illustration, we here give the explicit component forms in the orhogonal \(XYZ\) and \(\xi \eta \zeta \) systems, respectively.
Note that \(\varvec{L}_{NN}\) is of second order.
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Acknowledgments
This research was supported in part by the Swedish Foundation for Strategic Research Grant No. AM13-0029 and the Swedish Research Council Grants No. 2011-4992 and No. 2013-4708.
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Hansbo, P., Larson, M.G. & Larsson, F. Tangential differential calculus and the finite element modeling of a large deformation elastic membrane problem. Comput Mech 56, 87–95 (2015). https://doi.org/10.1007/s00466-015-1158-x
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DOI: https://doi.org/10.1007/s00466-015-1158-x