Numerical simulation and optimisation of depodding performance in a fresh green soybean harvester

文献类型： 外文期刊

第一作者： Zhao, Ying

作者： Zhao, Ying;Yang, Ranbing;Zhang, Xirui;Liu, Jinyi;Lin, Mao;Xing, Jiejie;Yang, Songmei;Hu, Can;Xi, Xiaobo;Ding, Wenqin;Xiao, Suwei

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关键词： EDEM simulation; Breakage rate; Brushing and combing; Field verification experiment

期刊名称：BIOSYSTEMS ENGINEERING （ 影响因子：5.3； 五年影响因子：5.9 ）

ISSN： 1537-5110

年卷期： 2025 年 253 卷

页码：

收录情况： SCI

摘要： A self-propelled beater drum harvester was designed in this study. A systematic analysis of the missed harvest and damage rates during the harvest process was conducted through material mechanical performance testing combined with Workbench and engineering discrete element method engineering discrete element method (EDEM) simulation software. Workbench was used to validate the compression performance of green soybean pods, and the results were highly consistent with the experimental data. A dynamic model for the beater depodding performance was established, and an orthogonal regression experiment was conducted to investigate the effects of drum rotating speed (A(1)), cutting platform height (B-1), and forward speed (C-1). The results showed that the models for missed harvest and damage rates were highly significant (p < 0.0001). Using EDEM software, different operational conditions and combinations of factors were simulated to conduct an in-depth study of the missed harvest rate (Y-1), damage rate (Y-2), and total loss rate (Y-T) the harvester. The maximum prediction error between the simulation results and experimental validation was 9.78 %. To minimise total loss, the parameters were optimised, yielding the following optimal combination: Y-T of 10.8 %, Y-1 of 6.9 %, and Y-2 of 3.9 %. The corresponding C-1 was 0.67 m s(-1), A(1) was 305 r. min(-1), and B-1 was 40 mm. The errors in the simulation analysis, model prediction, and experimental validation were all within 9.8 %. This study provides scientific guidance for optimising the design of fresh green soybean harvesters.

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