| 基于离散元的施肥机肥料块破碎装置参数的优化 |
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| 引用本文： | 宋学锋,张锋伟,戴飞,赵武云,杨杰,张雪坤.基于离散元的施肥机肥料块破碎装置参数的优化[J].湖南农业大学学报(自然科学版),2017,43(2). |
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| 作者姓名： | 宋学锋 张锋伟 戴飞 赵武云 杨杰 张雪坤 |
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| 作者单位： | 1. 甘肃农业大学工学院,甘肃兰州,730070;2. 中国农业大学工学院,北京,100083 |
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| 基金项目： | 国家自然科学基金项目，甘肃省青年科技基金计划项目，甘肃省高等学校科研项目 |
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| 摘 要： | 为解决2BF–02型玉米全膜双垄沟扎穴施肥机作业因肥料结块而排肥不顺的问题,设计了一种由箱体和辊轮组成的肥料块破碎装置。在离散元软件EDEM中建立肥料块离散元模型,按照3因素3水平正交试验方案对肥料块破碎装置工作过程进行虚拟试验。结果表明:影响肥料块破碎率的因素由大到小依次为辊轮间距、辊轮转速、辊轮齿数。当辊轮间距为6 mm、辊轮转速为150 r/min、辊轮齿数60个时,肥料块破碎率为98.8%(最高值)。对仿真结果进行试验验证,结果肥料块破碎率为94.4%。
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| 关 键 词： | 2BF–02型玉米全膜双垄沟扎穴施肥机 肥料结块破碎装置 离散元 参数优化 数值模拟 |
Parameter optimization for fertilizer block crushing device of fertilizer machine based on discrete element method |
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| SONG Xuefeng,ZHANG Fengwei,DAI Fei,ZHAO Wuyun,YANG Jie,ZHANG Xuekun.Parameter optimization for fertilizer block crushing device of fertilizer machine based on discrete element method[J].Journal of Hunan Agricultural University,2017,43(2). |
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| Authors: | SONG Xuefeng ZHANG Fengwei DAI Fei ZHAO Wuyun YANG Jie ZHANG Xuekun |
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| Abstract: | In order to solve the problem that 2BF–02 type of corn fertilizer machine with pricking hole under whole plastic–film on double ridges can't discharge fertilizer block smoothly, a fertilizer block crushing device was designed, which consisted of shell and wheels. The discrete element model of fertilizer block was generated by EDEM software to carry out the numerical simulation according to the 3–factor and 3–level orthogonal experiment. The results showed that factors affected crushing rate in descending order were wheel distance, wheel speed and wheel tooth, respectively. When the wheel distance was 6 mm with 60 the wheel tooth under the wheel speed of 150 r/min was, the crushing rate of fertilizer block was 98.8% (maximum value). In order to verify the validity of simulation results, the experimental test was conducted and obtained the crushing rate of fertilizer block was 94.4%. |
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| Keywords: | 2BF–02 type of corn fertilizer machine with pricking hole under whole plastic–film on double ridges fertilizer block crushing device discrete element method parameter optimization numerical simulation |
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