期刊论文

Calibration and shear experiments of discrete element bonding parameters for water caltrop

中文

华中农业大学学报

1000-2421

2023

42

04

270-278

10.13300/j.cnki.hnlkxb.2023.04.031

CARS-24-D-02:国家特色蔬菜产业技术体系项目 T201934:湖北省高等学校优秀中青年科技创新团队计划项目

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针对菱角（Trapa bispinosa Roxb.）脱壳初加工装备设计与仿真分析时缺乏有效的离散元模型问题，开展菱角粘结离散元参数标定与样机试验工作。采用三维反求技术获取菱角轮廓模型，测取菱角本征参数及基本接触参数，得到菱角平均剪切力为352.95 N，并以此为标定目标，采用EDEM软件中的Hertz-Mindlin with bonding模型建立菱角离散元模型，通过单因素试验筛选粘结参数标定范围，由二水平析因试验、最陡爬坡试验筛选显著因素及其标定区间，设计响应面试验求解粘结参数，确定离散元模型中的最优粘结参数组合，开展旋转剪切仿真试验及样机验证试验。结果显示：仿真得到的菱角脱壳剪切力为352 N，与实...

To address the problem of the lack of effective discrete element models in the design and simulation analysis of water caltrop dehulling primary processing equipment,this paper carries out the research work of water caltrop discrete element parameter calibration and pro...MORE To address the problem of the lack of effective discrete element models in the design and simulation analysis of water caltrop dehulling primary processing equipment,this paper carries out the research work of water caltrop discrete element parameter calibration and proto...