A simple discrete-element model for numerical studying the dynamic thermal response of granular materials
This paper aims to investigate the influence of periodicity temperature change on the properties of dry granular materials in macroscopic and microscopic. A series of cyclic thermal consolidation tests have been carried out based on the discrete element method (DEM) that incorporate particles’ volum...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2021-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ac34b8 |
| _version_ | 1797746764150734848 |
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| author | Ze-Xiang Wu Lei Yang Zhe Wang Ying-Chun Zhuang Dong-Mei Tu |
| author_facet | Ze-Xiang Wu Lei Yang Zhe Wang Ying-Chun Zhuang Dong-Mei Tu |
| author_sort | Ze-Xiang Wu |
| collection | DOAJ |
| description | This paper aims to investigate the influence of periodicity temperature change on the properties of dry granular materials in macroscopic and microscopic. A series of cyclic thermal consolidation tests have been carried out based on the discrete element method (DEM) that incorporate particles’ volumetric thermal expansion coefficient. The simulation of the direct shear test was carried out on the samples after thermal cycling. Results showed that thermally-induced volumetric strain accumulation of the specimen can be calculated by the DEM model, based on the two-dimensional particle flow code (PFC2D) software. The lateral pressure degraded concomitantly thanks to decreases in particles’ horizontal contact during periodic thermal cycling. In addition, the shear dilatancy level decreases during the shearing process with the number of thermal cycles. Both the size and anisotropy of the normal contact force and contact number and the force chain are affected by the temperature cycle. Finally, the results of this paper have a certain reference for the engineering practice, such as thermal piles or others, when granular materials are subjected to thermal cycling. |
| first_indexed | 2024-03-12T15:42:26Z |
| format | Article |
| id | doaj.art-be3f07ff58264795b6c2bd3cf1eee9d5 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:42:26Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-be3f07ff58264795b6c2bd3cf1eee9d52023-08-09T15:56:43ZengIOP PublishingMaterials Research Express2053-15912021-01-0181111550210.1088/2053-1591/ac34b8A simple discrete-element model for numerical studying the dynamic thermal response of granular materialsZe-Xiang Wu0https://orcid.org/0000-0002-1925-4073Lei Yang1Zhe Wang2https://orcid.org/0000-0002-4778-5760Ying-Chun Zhuang3Dong-Mei Tu4College of Civil engineering and Architecture, Wenzhou University, Wenzhou 325035, People’s Republic of ChinaCollege of Civil engineering and Architecture, Wenzhou University, Wenzhou 325035, People’s Republic of ChinaInstitute of geotechnical engineering, Zhejiang University of Technology, Hangzhou, 310014, People’s Republic of ChinaPower China Huadong Engineering Corporation Limited, Hangzhou 311122, People’s Republic of ChinaDepartment of Architecture and Civil Engineering, Oujiang College, Wenzhou University , Wenzhou 325035, People’s Republic of ChinaThis paper aims to investigate the influence of periodicity temperature change on the properties of dry granular materials in macroscopic and microscopic. A series of cyclic thermal consolidation tests have been carried out based on the discrete element method (DEM) that incorporate particles’ volumetric thermal expansion coefficient. The simulation of the direct shear test was carried out on the samples after thermal cycling. Results showed that thermally-induced volumetric strain accumulation of the specimen can be calculated by the DEM model, based on the two-dimensional particle flow code (PFC2D) software. The lateral pressure degraded concomitantly thanks to decreases in particles’ horizontal contact during periodic thermal cycling. In addition, the shear dilatancy level decreases during the shearing process with the number of thermal cycles. Both the size and anisotropy of the normal contact force and contact number and the force chain are affected by the temperature cycle. Finally, the results of this paper have a certain reference for the engineering practice, such as thermal piles or others, when granular materials are subjected to thermal cycling.https://doi.org/10.1088/2053-1591/ac34b8thermal consolidationdiscrete element methodanisotropygranular materials |
| spellingShingle | Ze-Xiang Wu Lei Yang Zhe Wang Ying-Chun Zhuang Dong-Mei Tu A simple discrete-element model for numerical studying the dynamic thermal response of granular materials Materials Research Express thermal consolidation discrete element method anisotropy granular materials |
| title | A simple discrete-element model for numerical studying the dynamic thermal response of granular materials |
| title_full | A simple discrete-element model for numerical studying the dynamic thermal response of granular materials |
| title_fullStr | A simple discrete-element model for numerical studying the dynamic thermal response of granular materials |
| title_full_unstemmed | A simple discrete-element model for numerical studying the dynamic thermal response of granular materials |
| title_short | A simple discrete-element model for numerical studying the dynamic thermal response of granular materials |
| title_sort | simple discrete element model for numerical studying the dynamic thermal response of granular materials |
| topic | thermal consolidation discrete element method anisotropy granular materials |
| url | https://doi.org/10.1088/2053-1591/ac34b8 |
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