摘要
针对有限元分析中排种器中铰链建模的困难,提出用杆单元模拟铰接点运动和动力学特性的近似处理方法,建立了排种器的整体模型,分析了系统的前四阶固有频率和对应的振型图。模态试验结果与仿真分析结果对比表明,所建立的有限元计算模型是准确的。根据分析结果及排种器的工作特点,其工作频率为4 Hz左右。
In this paper,an detailed finite element model about vibration seed-metering device is established.For analyzing hinge link quickly and more accuracy,Link Element in ANSYS is used to simulate movement and mechanical character of hinge joint.The first four order natural frequencies and mode shapes of device are calculated.The numerical results are to be in agreement in experiment results.Based on the results and vibration characteristic,about 4 Hz is working frequency of vibration seed-metering device.
出处
《浙江理工大学学报（自然科学版）》
2011年第1期69-72,共4页
Journal of Zhejiang Sci-Tech University(Natural Sciences)
基金
国家自然科学基金(50805134)
浙江理工大学科研启动基金(0803818-Y)
关键词
排种器
铰链连接
模态分析
振动特性
seed-metering device
hinge joint
modal analysis
vibration characteristics
