| 开沟器工作阻力的离散元法仿真分析 |
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| 引用本文： | 于建群,钱立彬,于文静,潘世强,方瑛,付宏. 开沟器工作阻力的离散元法仿真分析[J]. 农业机械学报, 2009, 40(6): 53-57 |
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| 作者姓名： | 于建群 钱立彬 于文静 潘世强 方瑛 付宏 |
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| 作者单位： | 吉林大学生物与农业工程学院,长春,130025;吉林大学计算机科学与技术学院,长春,130012;吉林大学测试科学实验中心,长春,130026 |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划)，国家科技支撑计划 |
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| 摘 要： | 建立了芯铧式开沟器和播种施肥开沟器与土壤颗粒的二维离散元法分析模型,采用离散元法研究开沟器的工作过程及工作阻力,通过改变开沟器的CAD模型和土壤颗粒参数,分析不同条件下开沟器的工作阻力.在室内土槽进行了2种开沟器的工作阻力测试,并将测试结果与开沟器工作阻力的离散元法计算结果进行了比较,两者的变化趋势基本一致,相对误差在10%～20%之间,由此初步证明了采用离散元法分析开沟器工作过程和工作阻力的可行性,为开沟器的研究和优化设计提供了一种新方法.
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| 关 键 词： | 开沟器 离散元法 土壤颗粒 数字化设计 |
of the Resistances Applied on Furrow Openers |
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| Yu Jianqun,Qian Libin,Yu Wenjing,Pan Shiqiang,Fang Ying,Fu Hong. of the Resistances Applied on Furrow Openers[J]. Transactions of the Chinese Society for Agricultural Machinery, 2009, 40(6): 53-57 |
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| Authors: | Yu Jianqun Qian Libin Yu Wenjing Pan Shiqiang Fang Ying Fu Hong |
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| Affiliation: | 1.School of Biological and Agricultural Engineering;Jilin University;Changchun 130025;China 2.College of Computer Science and Technology;Changchun 130012;China 3.Testing Science and Experiment Center;Changchun 130026;China |
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| Abstract: | In order to analyze the factors that affect the performance of a furrow opener,the two-dimensional DEM(discrete element method) analyzing models of two types of furrow openers and soil particles were built up.Through changing the CAD models of furrow openers,for each type of furrow openers,the operating processes and resistances in three kinds of soils with different moisture content at three different velocities and depths were analyzed by using the DEM.The performance of the openers was tested at each ope... |
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| Keywords: | Furrow openers Discrete element methods Soil particles Digital design |
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