Calibration and analysis of discrete element simulation parameters of Chinese cabbage seeds

Objective To improve the accuracy of parameters used in discrete element simulation test of Chinese cabbage seeds harvesting process. Methods Firstly, the key physical parameters of Chinese cabbage seeds were measured. According to the results, the discrete element simulation model was established a...

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Bibliographic Details
Published in:PloS one 2022-06, Vol.17 (6), p.e0270415-e0270415
Main Authors: Wang, Shengsheng, Mengqing, Lu, Liu, Xingyi, Ji, Jiangtao, Chen, Pan
Format: Article
Language:English
Subjects:
Accuracy
Angle of repose
Biology and Life Sciences
Brassica oleracea
Calibration
Chinese cabbage
Coefficient of friction
Computer and Information Sciences
Discrete element method
Engineering and Technology
Friction
Growth
Harvest
Moisture content
Optimization
Parameters
Physical properties
Physical Sciences
Physical tests
Properties
Research and Analysis Methods
Rolling resistance
Seeds
Simulation
Simulation models
Sliding friction
Static friction
Steel
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Summary:Objective To improve the accuracy of parameters used in discrete element simulation test of Chinese cabbage seeds harvesting process. Methods Firstly, the key physical parameters of Chinese cabbage seeds were measured. According to the results, the discrete element simulation model was established and the value range of simulation test parameters was determined. Then, the actual repose angle of Chinese cabbage seeds was obtained by physical accumulation test using bottomless conical cylinder lifting method. Plackett-Burman test, steepest climb test, Box-Behnken test and parameter optimization test were carried out in sequence with the actual angle of repose as the response value. Finally, the obtained parameters are verified. Results 1. The Plackett-Burman test showed that the seed-seed rolling friction coefficient, the seed-steel rolling friction coefficient, the seed-seed static friction coefficient, and the seed-steel static friction coefficient had significant effects on the repose angle of Chinese cabbage seeds (P
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0270415