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arXiv · 1801.02207

On the role of curvature in the elastic energy of non-Euclidean thin bodies

Cy Maor·Asaf Shachar
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Abstract

We prove a relation between the scaling $h^\beta$ of the elastic energies of shrinking non-Euclidean bodies $S_h$ of thickness $h\to 0$, and the curvature along their mid-surface $S$. This extends and generalizes similar results for plates [BLS16, LRR] to any dimension and co-dimension. In particular, it proves that the natural scaling for non-Euclidean rods with smooth metric is $h^4$, as claimed in [AAE+12] using a formal asymptotic expansion. The proof involves calculating the $\Gamma$-limit for the elastic energies of small balls $B_h(p)$, scaled by $h^4$, and showing that the limit infimum energy is given by a square of a norm of the curvature at a point $p$. This $\Gamma$-limit proves asymptotics calculated in [AKM+16].

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Cy Maor, Asaf Shachar. 2018-01-07. On the role of curvature in the elastic energy of non-Euclidean thin bodies. https://doi.org/10.1007/s10659-018-9686-1

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