Elastic graphs with clamped boundary and length constraints
Elastic graphs with clamped boundary and length constraints
复制标题
具有固定边界和长度约束的弹性图
DOI:
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发表时间:
2023
影响因子:
1
通讯作者:
Klaus Deckelnick
中科院分区:
文献类型:
--
作者:
Anna Dall’Acqua;Klaus Deckelnick
We study two minimization problems concerning the elastic energy on curves given by graphs subject to symmetric clamped boundary conditions. In the first, the inextensible problem, we fix the length of the curves while in the second, the extensible problem, we add a term penalizing the length. This can be considered as a one-dimensional version of the Helfrich energy. In both cases, we prove existence, uniqueness and qualitative properties of the minimizers. A key ingredient in our analysis is the use of Noether identities valid for critical points of the energy and derived from the invariance of the energy functional with respect to translations. These identities allow us also to prove curvature bounds and ordering of the minimizers even though the problem is of fourth order and hence in general does not allow for comparison principles.
影响因子:
0.7
作者:
A. Dall’Acqua
通讯作者:
A. Dall’Acqua