摘要
运用三维造型软件Pro/E绘制了一种牵引式马铃薯联合收获机茎叶清理装置的实体图,应用ANSYS Workbench有限元分析软件,对其建立有限元网格模型,进行有限元约束处理,通过对清叶装置进行模态分析,得到了清叶装置前6阶的振型图。通过对振型图的分析可以发现:清叶装置的前6阶振动固有频率随着阶次的增大而增加,其中第1阶和第2阶主振型由沿轴向窜动、绕轴向转动和切刀刀片左右摆动组成;第3阶到第6阶各阶频率比较接近,其主振型为切刀刀片左右摆动。通过模态分析,确定了前6阶振动固有频率范围内的各阶模态特性。同时,也为其它动态特性的分析,如谐响应分析、瞬态动力学分析等提供了前期基础。
A pull-type potato harvester leaf-cleaning device 3D graph is drawing by the application of Pro / E software.The finite element model is established by using ANSYS Workbench of the finite element analysis software.After the constraint processing,the mode shape figures of the front 6 order are obtained through the modal analysis of leaf-cleaning device.Based on the mode of vibration analysis,it can be found that the front 6 order natural frequency of vibration enlarged with the increase of the order.The first and the second order principal modes are composed by moving along the axial direction and rotating round the axis while the cutting blade swings from left to right;the frequencies from the third to sixth orders are close to the main vibration model,and the cutting blade swings from left to right.Through the modal analysis,it can provide the front 6 order modal characteristics within the scope of natural frequencies of vibration.At the same time,it also can provide the basis of the analysis for other dynamic analysis,for example: the harmonic response analysis,transient dynamic,and so on.
出处
《农机化研究》
北大核心
2012年第7期61-64,共4页
Journal of Agricultural Mechanization Research
基金
佳木斯大学理工类面上项目(L2010-108)
