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.
出处
《农机化研究》
北大核心
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)
