Determination of Discrete Element Modelling Parameters of a Paddy Soil with a High Moisture Content (>40%)
Discrete element modelling (DEM) parameters are of great importance for the accurate prediction of soil properties and disturbance. This study aimed to provide an efficient method for accurately determining the DEM parameters of a paddy soil with a high moisture content (45.66%). The DEM parameters...
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| Format: | Article |
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MDPI AG
2022-11-01
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| Series: | Agriculture |
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| Online Access: | https://www.mdpi.com/2077-0472/12/12/2000 |
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| author | Hao Zhou Tienan Zhou Xuezhen Wang Lian Hu Shengsheng Wang Xiwen Luo Jiangtao Ji |
| author_facet | Hao Zhou Tienan Zhou Xuezhen Wang Lian Hu Shengsheng Wang Xiwen Luo Jiangtao Ji |
| author_sort | Hao Zhou |
| collection | DOAJ |
| description | Discrete element modelling (DEM) parameters are of great importance for the accurate prediction of soil properties and disturbance. This study aimed to provide an efficient method for accurately determining the DEM parameters of a paddy soil with a high moisture content (45.66%). The DEM parameters of the paddy soil modelled using the Hertz–Mindlin with JKR contact model were determined by using the Plackett–Burman (PB), steepest ascent, and central composite tests. The accuracies of the developed DEM models were evaluated using actual slumping tests. Based on the PB test, the surface energy of soil, coefficients of soil–soil rolling friction, and coefficients of soil–steel static friction exerted larger influences on the overall relative error (<i>δ<sub>ZH</sub></i>). The optimization results showed that to achieve a minimum <i>δ<sub>ZH</sub></i> (5.96%), the surface energy of soil, the coefficients of soil–soil rolling friction, and the coefficients of soil–steel static friction should be 0.808 J m<sup>−2</sup>, 0.11, and 0.6, respectively. The optimized DEM model had an overall relative error of 7.27% with a coefficient of variation of 1.32%, indicating that the DEM parameters of the calibrated paddy soil had good accuracy. |
| first_indexed | 2024-03-09T17:27:27Z |
| format | Article |
| id | doaj.art-ea33426d4ea347188597cbb39561caeb |
| institution | Directory Open Access Journal |
| issn | 2077-0472 |
| language | English |
| last_indexed | 2024-03-09T17:27:27Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agriculture |
| spelling | doaj.art-ea33426d4ea347188597cbb39561caeb2023-11-24T12:39:36ZengMDPI AGAgriculture2077-04722022-11-011212200010.3390/agriculture12122000Determination of Discrete Element Modelling Parameters of a Paddy Soil with a High Moisture Content (>40%)Hao Zhou0Tienan Zhou1Xuezhen Wang2Lian Hu3Shengsheng Wang4Xiwen Luo5Jiangtao Ji6College of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471000, ChinaCollege of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471000, ChinaCollege of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471000, ChinaCollege of Engineering, South China Agricultural University, Guangzhou 510642, ChinaCollege of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471000, ChinaCollege of Engineering, South China Agricultural University, Guangzhou 510642, ChinaCollege of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471000, ChinaDiscrete element modelling (DEM) parameters are of great importance for the accurate prediction of soil properties and disturbance. This study aimed to provide an efficient method for accurately determining the DEM parameters of a paddy soil with a high moisture content (45.66%). The DEM parameters of the paddy soil modelled using the Hertz–Mindlin with JKR contact model were determined by using the Plackett–Burman (PB), steepest ascent, and central composite tests. The accuracies of the developed DEM models were evaluated using actual slumping tests. Based on the PB test, the surface energy of soil, coefficients of soil–soil rolling friction, and coefficients of soil–steel static friction exerted larger influences on the overall relative error (<i>δ<sub>ZH</sub></i>). The optimization results showed that to achieve a minimum <i>δ<sub>ZH</sub></i> (5.96%), the surface energy of soil, the coefficients of soil–soil rolling friction, and the coefficients of soil–steel static friction should be 0.808 J m<sup>−2</sup>, 0.11, and 0.6, respectively. The optimized DEM model had an overall relative error of 7.27% with a coefficient of variation of 1.32%, indicating that the DEM parameters of the calibrated paddy soil had good accuracy.https://www.mdpi.com/2077-0472/12/12/2000calibrationpaddy field cultivationsoil disturbance behaviorsvalidation |
| spellingShingle | Hao Zhou Tienan Zhou Xuezhen Wang Lian Hu Shengsheng Wang Xiwen Luo Jiangtao Ji Determination of Discrete Element Modelling Parameters of a Paddy Soil with a High Moisture Content (>40%) Agriculture calibration paddy field cultivation soil disturbance behaviors validation |
| title | Determination of Discrete Element Modelling Parameters of a Paddy Soil with a High Moisture Content (>40%) |
| title_full | Determination of Discrete Element Modelling Parameters of a Paddy Soil with a High Moisture Content (>40%) |
| title_fullStr | Determination of Discrete Element Modelling Parameters of a Paddy Soil with a High Moisture Content (>40%) |
| title_full_unstemmed | Determination of Discrete Element Modelling Parameters of a Paddy Soil with a High Moisture Content (>40%) |
| title_short | Determination of Discrete Element Modelling Parameters of a Paddy Soil with a High Moisture Content (>40%) |
| title_sort | determination of discrete element modelling parameters of a paddy soil with a high moisture content 40 |
| topic | calibration paddy field cultivation soil disturbance behaviors validation |
| url | https://www.mdpi.com/2077-0472/12/12/2000 |
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