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Deformation and Force Chain of Two-Dimensional Granular Systems under Continuous Loading

A continuous loading experiment of a two-dimensional granular system was carried out and the experimental data were obtained by digital image correlation (DIC). The deformation field of the granular system and the changing laws of the deflection angle and coordination number of the granules on force...

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Autores principales: Chen, Fanxiu, Liu, Yuxin, Wang, Yuan, Gu, Yanji, Yu, Yang, Sun, Jie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10419609/
https://www.ncbi.nlm.nih.gov/pubmed/37570144
http://dx.doi.org/10.3390/ma16155441
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author Chen, Fanxiu
Liu, Yuxin
Wang, Yuan
Gu, Yanji
Yu, Yang
Sun, Jie
author_facet Chen, Fanxiu
Liu, Yuxin
Wang, Yuan
Gu, Yanji
Yu, Yang
Sun, Jie
author_sort Chen, Fanxiu
collection PubMed
description A continuous loading experiment of a two-dimensional granular system was carried out and the experimental data were obtained by digital image correlation (DIC). The deformation field of the granular system and the changing laws of the deflection angle and coordination number of the granules on force chains with time were obtained. Based on the granule element method, the quantitative calculation of contact force was realized, and the internal force chains of the granular system were identified. The effects of contact force between granules and mechanical parameters on the evolution of force chains in a two-dimensional granular system under line loads were analyzed. The formation, evolution, and reconstruction of force chains in a granular system during loading, as well as the influence of the force chain network evolution on the macroscopic mechanical properties of granules were discussed. The experimental results indicated that the evolution of force chains was directly related to the number, geometric properties, and permutation distribution of granules in direct contact with the external load.
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spelling pubmed-104196092023-08-12 Deformation and Force Chain of Two-Dimensional Granular Systems under Continuous Loading Chen, Fanxiu Liu, Yuxin Wang, Yuan Gu, Yanji Yu, Yang Sun, Jie Materials (Basel) Article A continuous loading experiment of a two-dimensional granular system was carried out and the experimental data were obtained by digital image correlation (DIC). The deformation field of the granular system and the changing laws of the deflection angle and coordination number of the granules on force chains with time were obtained. Based on the granule element method, the quantitative calculation of contact force was realized, and the internal force chains of the granular system were identified. The effects of contact force between granules and mechanical parameters on the evolution of force chains in a two-dimensional granular system under line loads were analyzed. The formation, evolution, and reconstruction of force chains in a granular system during loading, as well as the influence of the force chain network evolution on the macroscopic mechanical properties of granules were discussed. The experimental results indicated that the evolution of force chains was directly related to the number, geometric properties, and permutation distribution of granules in direct contact with the external load. MDPI 2023-08-03 /pmc/articles/PMC10419609/ /pubmed/37570144 http://dx.doi.org/10.3390/ma16155441 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Chen, Fanxiu
Liu, Yuxin
Wang, Yuan
Gu, Yanji
Yu, Yang
Sun, Jie
Deformation and Force Chain of Two-Dimensional Granular Systems under Continuous Loading
title Deformation and Force Chain of Two-Dimensional Granular Systems under Continuous Loading
title_full Deformation and Force Chain of Two-Dimensional Granular Systems under Continuous Loading
title_fullStr Deformation and Force Chain of Two-Dimensional Granular Systems under Continuous Loading
title_full_unstemmed Deformation and Force Chain of Two-Dimensional Granular Systems under Continuous Loading
title_short Deformation and Force Chain of Two-Dimensional Granular Systems under Continuous Loading
title_sort deformation and force chain of two-dimensional granular systems under continuous loading
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10419609/
https://www.ncbi.nlm.nih.gov/pubmed/37570144
http://dx.doi.org/10.3390/ma16155441
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