DEM simulation of the local ordering of tetrahedral granular matter

Bo Zhao, Xizhong An, Haiyang Zhao, Lingling Shen, Xudong Sun, Zongyan Zhou

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The formation and growth of local order clusters in a tetrahedral granular assembly driven by 3D mechanical vibration were captured in DEM (discrete element method) dynamic simulation using a multi-sphere model. Two important kinds of clusters, dimer and wagon wheel structures, were observed based on which the growth behavior and mechanism of each local cluster with different orientations/structures were investigated. The results show that during vibration, dimer clusters are formed first and then most of them grow into linear trimers and tetramers. Wagon wheel clusters are also frequently observed that grow into hexamers and, further, octamer and nonamer local clusters. Coordination number (CN) evolution indicates that the decrease of local mean CN can be regarded as the signal for the formation of local clusters in the tetrahedral particle packing system. Nematic order metric analysis shows that although the two basic structures (dimer and wagon wheel structures) grow into complex local clusters during packing densification, these local clusters are randomly distributed in the tetrahedral particle packing system. Stress analysis indicates that the dimer-based local clusters are mostly formed in the compaction state of the tetrahedral particle packing system during the vibrated packing densification process. In comparison, the wagon wheel-based local clusters need much stronger interaction forces from tetrahedral particles during vibrated packing densification.

Original languageEnglish
Pages (from-to)2260-2268
Number of pages9
JournalSoft Matter
Volume15
Issue number10
DOIs
Publication statusPublished - 12 Feb 2019

Cite this

Zhao, Bo ; An, Xizhong ; Zhao, Haiyang ; Shen, Lingling ; Sun, Xudong ; Zhou, Zongyan. / DEM simulation of the local ordering of tetrahedral granular matter. In: Soft Matter. 2019 ; Vol. 15, No. 10. pp. 2260-2268.
@article{b25c047fb1bb497497c27f010b16c6d5,
title = "DEM simulation of the local ordering of tetrahedral granular matter",
abstract = "The formation and growth of local order clusters in a tetrahedral granular assembly driven by 3D mechanical vibration were captured in DEM (discrete element method) dynamic simulation using a multi-sphere model. Two important kinds of clusters, dimer and wagon wheel structures, were observed based on which the growth behavior and mechanism of each local cluster with different orientations/structures were investigated. The results show that during vibration, dimer clusters are formed first and then most of them grow into linear trimers and tetramers. Wagon wheel clusters are also frequently observed that grow into hexamers and, further, octamer and nonamer local clusters. Coordination number (CN) evolution indicates that the decrease of local mean CN can be regarded as the signal for the formation of local clusters in the tetrahedral particle packing system. Nematic order metric analysis shows that although the two basic structures (dimer and wagon wheel structures) grow into complex local clusters during packing densification, these local clusters are randomly distributed in the tetrahedral particle packing system. Stress analysis indicates that the dimer-based local clusters are mostly formed in the compaction state of the tetrahedral particle packing system during the vibrated packing densification process. In comparison, the wagon wheel-based local clusters need much stronger interaction forces from tetrahedral particles during vibrated packing densification.",
author = "Bo Zhao and Xizhong An and Haiyang Zhao and Lingling Shen and Xudong Sun and Zongyan Zhou",
year = "2019",
month = "2",
day = "12",
doi = "10.1039/c8sm02166j",
language = "English",
volume = "15",
pages = "2260--2268",
journal = "Soft Matter",
issn = "1744-683X",
publisher = "The Royal Society of Chemistry",
number = "10",

}

Zhao, B, An, X, Zhao, H, Shen, L, Sun, X & Zhou, Z 2019, 'DEM simulation of the local ordering of tetrahedral granular matter', Soft Matter, vol. 15, no. 10, pp. 2260-2268. https://doi.org/10.1039/c8sm02166j

DEM simulation of the local ordering of tetrahedral granular matter. / Zhao, Bo; An, Xizhong; Zhao, Haiyang; Shen, Lingling; Sun, Xudong; Zhou, Zongyan.

In: Soft Matter, Vol. 15, No. 10, 12.02.2019, p. 2260-2268.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - DEM simulation of the local ordering of tetrahedral granular matter

AU - Zhao, Bo

AU - An, Xizhong

AU - Zhao, Haiyang

AU - Shen, Lingling

AU - Sun, Xudong

AU - Zhou, Zongyan

PY - 2019/2/12

Y1 - 2019/2/12

N2 - The formation and growth of local order clusters in a tetrahedral granular assembly driven by 3D mechanical vibration were captured in DEM (discrete element method) dynamic simulation using a multi-sphere model. Two important kinds of clusters, dimer and wagon wheel structures, were observed based on which the growth behavior and mechanism of each local cluster with different orientations/structures were investigated. The results show that during vibration, dimer clusters are formed first and then most of them grow into linear trimers and tetramers. Wagon wheel clusters are also frequently observed that grow into hexamers and, further, octamer and nonamer local clusters. Coordination number (CN) evolution indicates that the decrease of local mean CN can be regarded as the signal for the formation of local clusters in the tetrahedral particle packing system. Nematic order metric analysis shows that although the two basic structures (dimer and wagon wheel structures) grow into complex local clusters during packing densification, these local clusters are randomly distributed in the tetrahedral particle packing system. Stress analysis indicates that the dimer-based local clusters are mostly formed in the compaction state of the tetrahedral particle packing system during the vibrated packing densification process. In comparison, the wagon wheel-based local clusters need much stronger interaction forces from tetrahedral particles during vibrated packing densification.

AB - The formation and growth of local order clusters in a tetrahedral granular assembly driven by 3D mechanical vibration were captured in DEM (discrete element method) dynamic simulation using a multi-sphere model. Two important kinds of clusters, dimer and wagon wheel structures, were observed based on which the growth behavior and mechanism of each local cluster with different orientations/structures were investigated. The results show that during vibration, dimer clusters are formed first and then most of them grow into linear trimers and tetramers. Wagon wheel clusters are also frequently observed that grow into hexamers and, further, octamer and nonamer local clusters. Coordination number (CN) evolution indicates that the decrease of local mean CN can be regarded as the signal for the formation of local clusters in the tetrahedral particle packing system. Nematic order metric analysis shows that although the two basic structures (dimer and wagon wheel structures) grow into complex local clusters during packing densification, these local clusters are randomly distributed in the tetrahedral particle packing system. Stress analysis indicates that the dimer-based local clusters are mostly formed in the compaction state of the tetrahedral particle packing system during the vibrated packing densification process. In comparison, the wagon wheel-based local clusters need much stronger interaction forces from tetrahedral particles during vibrated packing densification.

UR - http://www.scopus.com/inward/record.url?scp=85062626895&partnerID=8YFLogxK

U2 - 10.1039/c8sm02166j

DO - 10.1039/c8sm02166j

M3 - Article

VL - 15

SP - 2260

EP - 2268

JO - Soft Matter

JF - Soft Matter

SN - 1744-683X

IS - 10

ER -