Distributed Branch Points and the Shape of Elastic Surfaces with Constant Negative Curvature
Distributed Branch Points and the Shape of Elastic Surfaces with Constant Negative Curvature
复制标题
分布分支点与恒负曲率弹性曲面的形状
DOI:
10.1007/s00332-020-09657-2
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发表时间:
2021
影响因子:
3
通讯作者:
Venkataramani, Shankar C.
中科院分区:
文献类型:
--
作者:
Shearman, Toby L.;Venkataramani, Shankar C.
We develop a theory for distributed branch points and investigate their role in determining the shape and influencing the mechanics of thin hyperbolic objects. We show that branch points are the natural topological defects in hyperbolic sheets, they carry a topological index which gives them a degree of robustness, and they can influence the overall morphology of a hyperbolic surface without concentrating energy. We develop a discrete differential geometric approach to study the deformations of hyperbolic objects with distributed branch points. We present evidence that the maximum curvature of surfaces with geodesic radiusRcontaining branch points grow sub-exponentially,in contrast to the exponential growthfor surfaces without branch points. We argue that, to optimize norms of the curvature, i.e., the bending energy, distributed branch points are energetically preferred in sufficiently large pseudospherical surfaces. Further, they are distributed so that they lead to fractal-like recursive buckling patterns.
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影响因子:
2
作者:
S. Müller
通讯作者:
S. Müller
DOI:
--
发表时间:
2012
期刊:
影响因子:
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作者:
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通讯作者:
Jake Solomon
DOI:
--
发表时间:
2004
期刊:
影响因子:
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作者:
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