| 小麦籽粒碰撞模型中恢复系数的测定 |
| |
| 引用本文： | 王成军, 李耀明, 马履中, 马 征. 小麦籽粒碰撞模型中恢复系数的测定[J]. 农业工程学报, 2012, 28(11): 274-278. |
| |
| 作者姓名： | 王成军 李耀明 马履中 马 征 |
| |
| 作者单位： | 1.江苏大学现代农业装备与技术省部共建教育部重点实验室，镇江 212013;2.安徽理工大学机械工程学院，淮南 232001;3.江苏大学机械工程学院，镇江 212013 |
| |
| 基金项目： | 国家农业科技成果转化资金资助项目（2011GB2C00008）；国家高技术研究发展计划（“863”计划）资助项目（2012AA10A502）；江苏省高校自然科学研究资助项目（11KJA460002）；江苏高校优势学科建设工程资助项目（苏财教（2011）8号）；江苏省农业装备与智能化高技术研究重点实验室资助项目（BM2009703） |
| |
| 摘 要： | 为了建立小麦颗粒在清选振动筛和播种器中的碰撞模型，该文基于运动学方程原理构建了小麦恢复系数测试装置，对小麦的弹性特性进行了测定。试验采用河南省商丘市宁陵县黄岗乡小麦自留种，采用单因素试验结合响应面分析法，研究了碰撞材料、材料厚度、下落高度和小麦含水率对小麦恢复系数的影响。结果表明碰撞材料对小麦恢复系数影响较大，小麦的恢复系数随着碰撞材料刚度的增大而增大；小麦恢复系数随着下落高度和含水率的增大而减小，随着材料厚度的增加而增大。针对Q235碰撞材料，各因素对小麦恢复系数影响的显著性排序为：小麦含水率>材料厚度>下落高度，且小麦含水率与材料厚度2个影响因素的交互作用较为明显。该文的研究结果可为联合收割机清选振动筛和精密播种机的数值模拟和产品设计提供依据
|
| 关 键 词： | 模型 运动学 试验 小麦 碰撞 弹性特性 恢复系数 响应面法 |
| 收稿时间： | 2011-07-31 |
| 修稿时间： | 2012-04-20 |
Experimental study on measurement of restitution coefficient of wheat seeds in collision models |
| |
| Wang Chengjun, Li Yaoming, Ma Lüzhong, Ma Zheng. Experimental study on measurement of restitution coefficient of wheat seeds in collision models[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2012, 28(11): 274-278. |
| |
| Authors: | Wang Chengjun Li Yaoming Ma Lüzhong Ma Zheng |
| |
| Affiliation: | 1 (1. Institute of Modern Agricultural Equipment and Technology, Key Laboratory of Ministry of Education, Zhenjiang 212013, China; 2. College of Mechanical Engineering, Anhui University of Science and Technology, Huainan 232001, China;3. College of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China) |
| |
| Abstract: | To establish collision models of wheat seeds that on cleaning screen or seeds sower, a wheat restitution coefficient test device was build based on principle of kinematics equation in the paper, which was used to test the elastic properties of wheat seeds. Yangmai No.17 which is widely cultivated in Jiangsu, Zhejiang, Anhui province was chosen in the test and the mixed orthogonal design was used to investigate the factors that influencing the restitution coefficient of wheat such as collision material, sheet thickness, drop height and moisture content of wheat. Results indicate that the primary and secondary order of factors affecting restitution coefficient of wheat are impact material, drop height, sheet thickness and moisture content of wheat. The restitution coefficient of wheat decreases with the falling height increasing, but increases with the sheet thickness increasing. Wheat moisture content has little influence on the restitution coefficient. The results can provide a reference for the simulation and product design of cleaning screen in combined harvesters and precision seeds sower machine. |
| |
| Keywords: | models kinematics experiments wheat collision elastic properties restitution coefficient |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《农业工程学报》浏览原始摘要信息 |
|
点击此处可从《农业工程学报》下载全文 |
