| Calibration and testing of discrete element simulation parameters of albic soil in Sanjiang Plain |
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| DOI：10.7606/j.issn.1000-7601.2025.05.28 |
| Key Words: albic soil discrete element method EDEM simulation parameter calibration Sanjiang Plain |
| Author Name | Affiliation | | ZOU Peishi | College of Engineering, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | MA Yongcai | College of Engineering, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | WANG Hanyang | College of Engineering, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | MAO Xin | College of Engineering, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China | | CHEN Peng | College of Engineering, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China |
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| Abstract: |
| In order to explore the accurate discrete element simulation model parameters of albic soil in the albic soil area of Sanjiang Plain and construct a valuable soil model, this paper conducted parameter calibration experiments on the topsoil (0~15 cm) and soil\|albic soil (15~35 cm) mixture. The Hertz-Mindlin with JKR contact model was used to calibrate the contact parameters of discrete element simulation by combining physical test with EDEM simulation test. The Plackett-Burman test in Design-Expert software was used. The steepest ascent test took the actual accumulation angle as the target, and the software optimization function was used to optimize the significant parameters. The results showed that the optimal parameter combination of topsoil soil\|albic horizon soil rolling friction coefficient was 0.220, the albic horizon soil\|albic horizon soil rolling friction coefficient was 0.223, and the JKR surface energy was 0.055 J·m-2 (albic horizon) and 0.044 J·m-2 (opsoil\|albic horizon). Under this parameter combination condition, the simulation experiment was conducted with a relative error of 0.84%, which proves that the simulation results are highly consistent with experimental results. |
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