Three‐dimensional elastic beam frames: Rigid joint conditions in variational and differential formulation
Three‐dimensional elastic beam frames: Rigid joint conditions in variational and differential formulation
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三维弹性梁框架:变分和微分公式中的刚性连接条件
DOI:
10.1111/sapm.12485
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发表时间:
2022
影响因子:
2.7
通讯作者:
Ettehad, Mahmood
中科院分区:
文献类型:
--
作者:
Berkolaiko, Gregory;Ettehad, Mahmood
We consider three‐dimensional elastic frames constructed out of Euler–Bernoulli beams and describe a simple process of generating joint conditions out of the geometric description of the frame. The corresponding differential operator is shown to be self‐adjoint. In the special case of planar frames, the operator decomposes into a direct sum of two operators, one coupling out‐of‐plane displacement to angular (torsional) displacement and the other coupling in‐plane displacement with axial displacement (compression). Detailed analysis of two examples is presented. We actively exploit the symmetry present in the examples and decompose the operator by restricting it onto reducing subspaces corresponding to irreducible representations of the symmetry group. These “quotient” operators are shown to capture particular oscillation modes of the frame.
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影响因子:
2.2
作者:
J. Banerjee
通讯作者:
J. Banerjee
DOI:
10.1070/im2002v066n02abeh000380
发表时间:
2002
期刊:
Izvestiya: Mathematics
影响因子:
--
作者:
V. Zhikov
通讯作者:
V. Zhikov
DOI:
10.1007/s00023-020-00979-1
发表时间:
2020
期刊:
Annales Henri Poincaré
影响因子:
--
作者:
P. Kurasov;Jacob Muller
通讯作者:
Jacob Muller
影响因子:
1.3
作者:
P. Kuchment;Hongbiao Zeng
通讯作者:
Hongbiao Zeng
DOI:
10.1051/m2an:2002029
发表时间:
2002
期刊:
Mathematical Modelling and Numerical Analysis
影响因子:
--
作者:
G. Menzala;A. Pazoto;E. Zuazua
通讯作者:
E. Zuazua