花生秧根茎碰撞恢复系数测定试验  

Experiment on Determination of Recovery Coefficient of Peanut Seedling

作　　者：贺欣 彭强吉 李国明 王小瑜 张春艳 康建明 HE Xin;PENG Qiangji;LI Guoming;WANG Xiaoyu;ZHANG Chunyan;KANG Jianming(School of Mechanical and Automotive Engineering,Liaocheng University,Liaocheng 252000,China;Shandong Academy of Agriculture Machinery Sciences,Ji’nan 250100,China;Shandong Key Laboratory of Intelligent Agricultural Equipment in Hilly and Mountainous Areas,Ji’nan 250100,China;College of Agricultural Engineering and Food Science,Shandong University of Technology,Zibo 255049,China)

机构地区：[1]聊城大学机械与汽车工程学院,聊城252000 [2]山东省农业机械科学研究院,济南250100 [3]山东省丘陵山区智慧农业装备重点实验室,济南250100 [4]山东理工大学农业工程与食品科学学院,淄博255049

出　　处：《农业机械学报》2024年第S1期156-164,共9页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金面上项目(52175238);山东省农机研发制造推广应用一体化试点项目(NJYTHSD-202321);新疆维吾尔自治区重点研发计划项目(2022B02022-1);山东省生态农业技术体系项目(SDAIT-30-05)

摘　　要：针对膜杂风选机作业过程不稳定,数值模拟缺乏参数难以仿真的问题,通过单因素和多因素试验研究,构建了花生秧根茎与机械工作部件之间的碰撞模型,实现了恢复系数的准确测定。试验基于花生秧根茎力学特性差异,选取碰撞材料、碰撞角度、下落高度、含水率作为试验因素进行试验,研究试验因素对花生秧根、茎恢复系数的影响,建立试验因素与恢复系数之间的回归模型,进行试验因素回归分析。单因素试验结果表明:花生秧根恢复系数大于花生秧茎恢复系数,花生秧根、茎与45号钢、亚克力板、花生秧、橡胶、地膜之间的恢复系数依次减小,恢复系数偏差随之降低,平均偏差为0.0684;花生秧根、茎与45号钢之间的恢复系数,随碰撞角度增大而增加,恢复系数偏差先减小后增大,平均偏差为0.0926;随下落高度增大而增加,恢复系数偏差上下波动,平均偏差为0.0878;随含水率增大而减小,含水率达到40%,恢复系数偏差急剧下降,平均偏差为0.0827,回归方程决定系数均大于0.97。正交试验结果表明,影响恢复系数各因素的主次顺序为:碰撞材料、碰撞角度、下落高度、含水率。验证试验结果表明:花生秧根、茎平均相对误差分别为3.928%和4.146%。研究结果可为秧膜分离、膜杂风选机等设备数值模拟参数设置提供参考依据。In order to solve the problem that the operation process of the membrane hybrid winnowing machine is unstable and the numerical simulation lacks parameters which is difficult to simulate,the collision model between the rhizome of peanut seedling and the mechanical working parts was constructed through single factor and multi-factor experimental research,and the accurate determination of the recovery coefficient was realized.Based on the differences in mechanical properties of peanut seedling rhizomes,the collision material,collision angle,falling height and moisture content were selected as the test factors,the influence of the test factors on the recovery coefficient of peanut seedling roots and stems was studied,the regression model between the test factors and the recovery coefficient was established,and the regression analysis of the test factors was carried out.The results of single factor test showed that the recovery coefficient of peanut seedling roots was greater than that of peanut seedling stems,and the recovery coefficients between peanut seedling roots and stems and No.45 steel,acrylic plate,peanut seedlings,rubber sheet and plastic film decreased in turn,and the deviation of the recovery coefficient was decreased with an average deviation of 0.0684.The average deviation was 0.0926,the average deviation of the recovery coefficient fluctuated up and down with the increase of falling height,and the average deviation was 0.0878,and the average deviation of the recovery coefficient was decreased sharply with the increase of the moisture content,the moisture content reached 40%,and the deviation of the recovery coefficient was decreased sharply,with an average deviation of 0.0827,and the determination coefficient of the regression equation was greater than 0.97.The orthogonal test results showed that the order of the factors affecting the recovery coefficient was as follows:collision material,collision angle,falling height and moisture content.The results of the verification test showed that the average r

关 键 词：花生秧 碰撞恢复系数 碰撞试验 高速摄像 

分 类 号：S225[农业科学—农业机械化工程]