免耕播种机缺口圆盘刀有限元静强度分析  

Finite Element Analysis for Gap Disc of No-till Planter

作　　者：杨帆[1] 李问盈[1] 李洪文[1] 苏艳波[1] 

机构地区：[1]中国农业大学工学院,北京100083

出　　处：《农业机械学报》2010年第6期53-55,80,共4页Transactions of the Chinese Society for Agricultural Machinery

基　　金："十一五"国家科技支撑计划资助项目(2006BAD28B04);中国农业大学科研启动基金资助项目(2009JS17)

摘　　要：采用ANSYS软件对免耕播种机缺口圆盘刀进行了有限元静强度分析。通过定义单元类型、材料属性,对圆盘刀进行了网格划分,从而生成了圆盘刀的有限元模型,载荷为切割作物秸秆的切割阻力以及切破地表、挤开土壤的切土阻力。通过求解圆盘刀的有限元模型,得到刀片的应力分布图,为缺口圆盘刀的设计和优化提供了理论依据。In order to obtain better anti-blocking device on no-till planter,a finite element analysis on gap disc with ANSYS was conducted.Through element type selecting and material properties setting,ANSYS could transfer gap disc image into mesh size and generate a finite element model,in which loadings consisted of straw-cutting resistance and soil-penetrating resistance.Then the gap disc model was calculated,a series figure of different components of stress was obtained.Theoretical basis of further modification and optimization for gap disc was given.

关 键 词：免耕播种机 缺口圆盘刀 有限元法 强度分析 

分 类 号：S223.24[农业科学—农业机械化工程] O241.82[农业科学—农业工程]