Discrete-to-continuum limits of planar disclinations
Discrete-to-continuum limits of planar disclinations
复制标题
平面向错的离散到连续极限
DOI:
10.1051/cocv/2021025
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
van Meurs Patrick
中科院分区:
文献类型:
--
作者:
Cesana Pierluigi;van Meurs Patrick
In materials science, wedge disclinations are defects caused by angular mismatches in the crystallographic lattice. To describe such disclinations, we introduce an atomistic model in planar domains. This model is given by a nearest-neighbor-type energy for the atomic bonds with an additional term to penalize change in volume. We enforce the appearance of disclinations by means of a special boundary condition. Our main result is the discrete-to-continuum limit of this energy as the lattice size tends to zero. Our proof relies on energy relaxation methods. The main mathematical novelty of our proof is a density theorem for the special boundary condition. In addition to our limit theorem, we construct examples of planar disclinations as solutions to numerical minimization of the model and show that classical results for wedge disclinations are recovered by our analysis.
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影响因子:
1
作者:
G. Lazzaroni;M. Palombaro;A. Schlomerkemper
通讯作者:
A. Schlomerkemper
影响因子:
2.9
作者:
SEUNG, HS;NELSON, DR
通讯作者:
NELSON, DR
DOI:
10.6028/jres.077a.024
发表时间:
1973
期刊:
Journal of research of the National Bureau of Standards. Section A, Physics and chemistry
影响因子:
--
作者:
R. Dewit
通讯作者:
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影响因子:
1
作者:
Pierluigi Cesana;B. Hambly
通讯作者:
B. Hambly
DOI:
10.1137/060657054
发表时间:
2007-06
期刊:
SIAM J. Math. Anal.
影响因子:
--
作者:
M. Ponsiglione
通讯作者:
M. Ponsiglione