Mechanical Interpretation of Coarse-grained Stiffness Matrix Based on Elastic-body Modeling of Molecular Assemblies

We have been developing a method for coarse-graining the low-frequency vibration modes of molecular assemblies, which affords a numerical representation of the down-sized stiffness matrix. In this study, we present an analytical representation of the stiffness matrix based on the elastic-body modeli...

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Veröffentlicht in:Journal of computer chemistry, Japan Japan, 2022, Vol.21 (4), p.99-102, Article 2023-0006
Hauptverfasser: HOUJOU, Hirohiko, NAKAJIMA, Hirota, OKAMURA, Shota, KIKUOKA, Ryutaro
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container_end_page 102
container_issue 4
container_start_page 99
container_title Journal of computer chemistry, Japan
container_volume 21
creator HOUJOU, Hirohiko
NAKAJIMA, Hirota
OKAMURA, Shota
KIKUOKA, Ryutaro
description We have been developing a method for coarse-graining the low-frequency vibration modes of molecular assemblies, which affords a numerical representation of the down-sized stiffness matrix. In this study, we present an analytical representation of the stiffness matrix based on the elastic-body modeling of molecular assemblies. Comparison between the numerical and analytical data allows the 13 parameters regarding the dimension and mechanical properties of the putative elastic body. The results for 57 molecular dimers with various hydrogen-bond multiplicity demonstrate that the obtained parameters were physically reasonable and well-reproduced the wavenumbers of normal-mode vibrations.
doi_str_mv 10.2477/jccj.2023-0006
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subjects Assemblies
Elastic bodies
Granulation
Hydrogen bonds
Mathematical models
Mechanical properties
Parameters
Representations
Stiffness matrix
Vibration mode
title Mechanical Interpretation of Coarse-grained Stiffness Matrix Based on Elastic-body Modeling of Molecular Assemblies
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