施肥机有限元模态分析与结构优化  

Finite element mode analysis and structure optimization for fertilizer spreader

作　　者：徐玉娟[1,2,3] 吴明亮[1,2,3] 官春云[4,3] 李洁[1,2,3] 

机构地区：[1]湖南农业大学工学院,湖南长沙410128 [2]湖南省现代农业装备工程技术研究中心,湖南长沙410128 [3]南方粮油作物协同创新中心,湖南长沙410128 [4]湖南农业大学油料作物研究所,湖南长沙410128

出　　处：《湖南农业大学学报（自然科学版）》2015年第1期104-108,共5页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：湖南省政府重大专项(湘府阅[2014]35号);湖南省教育厅重点项目(13A038);湖南省科学技术厅项目(2013FJ2006)

摘　　要：针对所设计的2SF–0.6型施肥机,利用Simulation软件对其关键部件进行静态有限元分析与优化,得到了肥料箱箱体壁厚取值为1 mm、输送转轴上的搅拌器直径6 mm、机架的矩形钢管厚度2 mm;对施肥机进行模态分析表明,输送文献转轴与抛撒转轴的转速取值应避开975.84~1 463.76 r/min,优化后整机的10阶模态频率均远离外部激励振源的回转振动频率20.33 Hz,可以有效避免共振的产生。The static finite element analysis and structure optimization were performed for 2SF-0.6 type fertilizer spreader by using the Simulation software. A series of key structure parameters of the components were obtained as following： thickness of the fertilizer box wall is 1 ram, diameter of transmission shaft is 6 mm and thickness of the rectangular steel pipe in the frame is 2 mm. By modal analysis of the optimized structure, it can be concluded that the transmission shaft＇s rotation speed should avoid the range of 975.84-1 463.76 r/min. The optimized fertilizer spreader can effectively prevent the resonance because the 10th modal vibration frequency of the unit is far away from the rotary vibration frequency of external excitation source, i.e. about 20.33 Hz.

关 键 词：施肥机 结构优化 模态分析 

分 类 号：S224.22[农业科学—农业机械化工程]