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      2. 基于離散元仿真參數的微型薯物料測定
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        1.華中農業大學工學院;2.農業部馬鈴薯生物學與生物技術重點實驗室

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        湖北省科技創新重大項目(2016ABA092)、國家馬鈴薯現代農業產業技術體系項目(CARS-09-P08)


        Determination of Materials for Potato Minituber Based on Discrete Element Simulation Parameters
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        1.College of Engineering;2.Ministry of Agriculture Key Laboratory of Potato Biology and Biotechnology

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          摘要:

          在微型薯排種器、分級機等機械設備的設計過程中,物料的物理力學特征參數必不可少,隨著仿真技術的發展,物料的接觸力學參數也急需完善。針對這些問題,以微型薯“大西洋”、“中薯5號”和“華薯1號”為研究對象,以離散元軟件EDEM中微型薯研究所需的相關參數為目標,測定微型薯的物理力學特征參數和接觸力學參數;將上述測定后的參數輸入EDEM進行仿真,求取微型薯之間的滾動摩擦系數;以堆積角為響應值,使用圓筒提升法驗證仿真結果的可信度。結果表明:與試驗實際堆積角相比,不同品種的微型薯仿真結果差異均低于3%,仿真結果可靠。

          Abstract:

          Physical and mechanical characteristic parameters are indispensable in the design of potato minituber related mechanical equipment planter and classifier, developing of simulation technology the contact mechanics parameters are also. Aiming at these problems, "Daxiyang", "Zhongshu No. 5" and "Huashu No. 1" were taken as research objects. The Physical mechanics parameters and contact mechanics parameters were determined with the relevant parameters required for discrete element software EDEM in potato minituber research. The parameters measured in the above experiment were input into the EDEM for simulation to obtain the rolling friction coefficient between the potato minituber. the stacking angle was used as the response value, and the credibility of the simulation results was verified by raising a round pipe slowly. The results show that compared with the actual accumulation angle of the experiment, the simulation results of different varieties of potato minituber are less than 3%, and the results are reliable.

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        • 收稿日期:2019-11-21
        • 最后修改日期:2019-12-18
        • 錄用日期:2019-12-23
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