DISCRETE-TO-CONTINUUM LINEARIZATION IN ATOMISTIC DYNAMICS

被引:0
|
作者
Friedrich, Manuel [1 ,2 ]
Seitz, Manuel [3 ,4 ]
Stefanelli, Ulisse [3 ,5 ,6 ]
机构
[1] Friedrich Alexander Univ Erlangen Nurnberg, Dept Math, Cauerstr 11, D-91058 Erlangen, Germany
[2] Univ Munster, Math Munster, Einsteinstr 62, D-48149 Munster, Germany
[3] Univ Vienna, Fac Math, Oskar Morgenstern Pl 1, A-1090 Vienna, Austria
[4] Univ Vienna, Vienna Sch Math, Oskar Morgenstern Pl 1, A-1090 Vienna, Austria
[5] Univ Vienna, Vienna Res Platform Accelerating Photoreact Discov, Wahringerstr 17, A-1090 Vienna, Austria
[6] Ist Matemat Applicata & Tecnol Informat E Magenes, Via Ferrata 1, I-27100 Pavia, Italy
基金
奥地利科学基金会;
关键词
Discrete-to-continuum and linearization limit; variational evolution; equation of motion; evolutive I. .-convergence; GAMMA-CONVERGENCE; GRADIENT FLOWS; SYSTEMS; LIMITS; ELASTICITY; DERIVATION; ENERGIES; PASSAGE; MODELS;
D O I
10.3934/dcds.2024115
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
. In the stationary case, atomistic interaction energies can be proved to I.-converge to classical elasticity models in the simultaneous atomistic-tocontinuum and linearization limit [19, 41]. The aim of this note is that of extending the convergence analysis to the dynamic setting. Moving within the framework of [41], we prove that solutions of the equation of motion driven by atomistic deformation energies converge to the solutions of the momentum equation for the corresponding continuum energy of linearized elasticity. By recasting the evolution problems in their equivalent energy-dissipationinertia-principle form, we directly argue at the variational level of evolutionary I.-convergence [33, 37]. This in particular ensures the pointwise in time convergence of the energies.
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页码:847 / 874
页数:28
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