基于ANSYS的播种机牵引梁模态分析  

Modal Analysis of Drag-bar of Planter Based on ANSYS

作　　者：马颖[1] 李成华[2] 张国梁[3] 杨宇[1] 张晓冬[1] 

机构地区：[1]沈阳农业大学工程学院,沈阳110161 [2]沈阳理工大学机械工程学院,沈阳110168 [3]河北农业大学林学院,河北保定071000

出　　处：《农机化研究》2010年第6期80-82,86,共4页Journal of Agricultural Mechanization Research

基　　金：辽宁省自然科学基金项目(20052121)

摘　　要：运用Pro/E对2BQ-2型精密播种机牵引梁进行三维建模,并利用ANSYS Workbench软件对播种机牵引梁结构进行模态分析,求解出牵引梁结构的模态参数,确定了牵引梁的固有频率和振型特征。在0～1Hz内,牵引梁的模态频率较密集,是影响牵引梁振动的主要区域,当外加激励频率与牵引梁固有频率相同时发生共振,引起播种质量下降;当牵引梁以0.237Hz的频率振动时,牵引梁将进行摆振,研究结果为牵引梁的优化设计提供了参考依据。Three-dimensional model of drag-bar for 2BQ-2 planter was developed through Pro/E,the model was then transferred into ANSYS for analysis,and modal parameters of the drag-bar were calculated,natural frequency and vibration features of the drag-bar were determined. Modal frequency was concertrated in 0-1Hz which was main vibration band,and planting quality would be negatively affected when sympathetic vibration occurred as outside inspire frequency in accordance with natural vibration frequence of the drag-bar. The drag-bar would be in pendulum vibration when vibration frequency was at 0. 23Hz. The results of the study provided reference for optimization design of the dragbar of the planter.

关 键 词：播种机 牵引梁 ANSYS 模态分析 

分 类 号：S223.2[农业科学—农业机械化工程] S126[农业科学—农业工程]