Energy scaling law for the regular cone
Abstract
We consider a thin elastic sheet in the shape of a disk whose reference metric is that of a singular cone. I.e., the reference metric is flat away from the center and has a defect there. We define a geometrically fully nonlinear free elastic energy, and investigate the scaling behavior of this energy as the thickness tends to 0. We work with two simplifying assumptions: Firstly, we think of the deformed sheet as an immersed 2-dimensional Riemannian manifold in Euclidean 3-space and assume that the exponential map at the origin (the center of the sheet) supplies a coordinate chart for the whole manifold. Secondly, the energy functional penalizes the difference between the induced metric and the reference metric in (instead of, as is usual, in ). Under these assumptions, we show that the elastic energy per unit thickness of the regular cone in the leading order of is given by , where the value of is given explicitly.
Keywords
Cite
@article{arxiv.1502.07013,
title = {Energy scaling law for the regular cone},
author = {Heiner Olbermann},
journal= {arXiv preprint arXiv:1502.07013},
year = {2016}
}
Comments
26 pages, Sections 1 and 2 rearranged, introduction streamlined