The Establishment of a Discrete Element Model of Wheat Grains with Different Moisture Contents: A Research Study
The high moisture content of wheat grains in extreme weather, such as continuous rain, can easily cause mildew, and we lack accurate discrete element parameters when conducting a simulation analysis of the rapid dehumidification of high-moisture grains. Based on the material characteristics of wheat...
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MDPI AG
2025-06-01
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| Series: | Agriculture |
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| author | He Li Guangmeng Guo Lu Xun Junhao Lu Huanhuan Chen Gongpei Cui |
| author_facet | He Li Guangmeng Guo Lu Xun Junhao Lu Huanhuan Chen Gongpei Cui |
| author_sort | He Li |
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| description | The high moisture content of wheat grains in extreme weather, such as continuous rain, can easily cause mildew, and we lack accurate discrete element parameters when conducting a simulation analysis of the rapid dehumidification of high-moisture grains. Based on the material characteristics of wheat grains with a moisture content ranging from 10.41% to 32.51%, the key parameters of discrete element simulation were calibrated. Firstly, the stacking angle under different moisture contents was determined by a physical experiment, and the regression equation was established as R<sup>2</sup> = 0.9981. Subsequently, three significant parameters, namely, the static friction coefficient between the grains and steel plates, the static friction coefficient between grains, and the rolling friction coefficient, were selected from nine parameters using the Plackett–Burman test and the steepest climbing test. Furthermore, the stacking angle–discrete element parameter model was established using the Box–Behnken test as R<sup>2</sup> = 0.98, with a relative error of less than or equal to 3.28%. Finally, the moisture content–discrete element parameter model was derived and constructed based on the moisture content–stacking angle model and the stacking angle–discrete element parameter model, with a relative error of less than or equal to 3.92%. The results indicate that the discrete element simulation parameters of wheat grains can be directly predicted by the moisture content and used for the discrete element simulation testing of high-moisture wheat grains. This universal calibration method not only provides convenient and reliable technical support for optimizing the emergency rapid dehumidification process for high-moisture wheat grains but also provides a reference method for the calibration of other grains. |
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| institution | Kabale University |
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| series | Agriculture |
| spelling | doaj-art-57b6949d4d0d4b95b78ae59ccd6779a32025-08-20T03:46:38ZengMDPI AGAgriculture2077-04722025-06-011511123210.3390/agriculture15111232The Establishment of a Discrete Element Model of Wheat Grains with Different Moisture Contents: A Research StudyHe Li0Guangmeng Guo1Lu Xun2Junhao Lu3Huanhuan Chen4Gongpei Cui5College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, ChinaCollege of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, ChinaCollege of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, ChinaCollege of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, ChinaCollege of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, ChinaCollege of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, ChinaThe high moisture content of wheat grains in extreme weather, such as continuous rain, can easily cause mildew, and we lack accurate discrete element parameters when conducting a simulation analysis of the rapid dehumidification of high-moisture grains. Based on the material characteristics of wheat grains with a moisture content ranging from 10.41% to 32.51%, the key parameters of discrete element simulation were calibrated. Firstly, the stacking angle under different moisture contents was determined by a physical experiment, and the regression equation was established as R<sup>2</sup> = 0.9981. Subsequently, three significant parameters, namely, the static friction coefficient between the grains and steel plates, the static friction coefficient between grains, and the rolling friction coefficient, were selected from nine parameters using the Plackett–Burman test and the steepest climbing test. Furthermore, the stacking angle–discrete element parameter model was established using the Box–Behnken test as R<sup>2</sup> = 0.98, with a relative error of less than or equal to 3.28%. Finally, the moisture content–discrete element parameter model was derived and constructed based on the moisture content–stacking angle model and the stacking angle–discrete element parameter model, with a relative error of less than or equal to 3.92%. The results indicate that the discrete element simulation parameters of wheat grains can be directly predicted by the moisture content and used for the discrete element simulation testing of high-moisture wheat grains. This universal calibration method not only provides convenient and reliable technical support for optimizing the emergency rapid dehumidification process for high-moisture wheat grains but also provides a reference method for the calibration of other grains.https://www.mdpi.com/2077-0472/15/11/1232wheat grainmoisture contentdiscrete element methodparameter calibrationstacking angle |
| spellingShingle | He Li Guangmeng Guo Lu Xun Junhao Lu Huanhuan Chen Gongpei Cui The Establishment of a Discrete Element Model of Wheat Grains with Different Moisture Contents: A Research Study Agriculture wheat grain moisture content discrete element method parameter calibration stacking angle |
| title | The Establishment of a Discrete Element Model of Wheat Grains with Different Moisture Contents: A Research Study |
| title_full | The Establishment of a Discrete Element Model of Wheat Grains with Different Moisture Contents: A Research Study |
| title_fullStr | The Establishment of a Discrete Element Model of Wheat Grains with Different Moisture Contents: A Research Study |
| title_full_unstemmed | The Establishment of a Discrete Element Model of Wheat Grains with Different Moisture Contents: A Research Study |
| title_short | The Establishment of a Discrete Element Model of Wheat Grains with Different Moisture Contents: A Research Study |
| title_sort | establishment of a discrete element model of wheat grains with different moisture contents a research study |
| topic | wheat grain moisture content discrete element method parameter calibration stacking angle |
| url | https://www.mdpi.com/2077-0472/15/11/1232 |
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