Packing of elastic rings with friction
Packing of elastic rings with friction
复制标题
带摩擦的弹性环的填料
DOI:
10.1098/rspa.2021.0742
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Alben, S.
中科院分区:
文献类型:
--
作者:
Alben, S.
We study the deformations of elastic filaments confined within slowly shrinking circular boundaries, under contact forces with friction. We perform computations with a spring-lattice model that deforms like a thin inextensible filament of uniform bending stiffness. Early in the deformation, two lobes of the filament make contact. If the friction coefficient is small enough, one lobe slides inside the other; otherwise, the lobes move together or one lobe bifurcates the other. There follows a sequence of deformations that is a mixture of spiralling and bifurcations, primarily the former with small friction and the latter with large friction. With zero friction, a simple model predicts that the maximum curvature and the total elastic energy scale as the wall radius to theandpowers, respectively. With non-zero friction, the elastic energy follows a similar scaling but with a prefactor up to eight times larger, due to delayering and bending with a range of small curvatures. For friction coefficients as large as 1, the deformations are qualitatively similar with and without friction at the outer wall. Above 1, the wall friction case becomes dominated by buckling near the wall.
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DOI:
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发表时间:
2007
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
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影响因子:
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