摘要
本文以某农用III型浅耕旋耕刀为研究对象,详细分析了其几何结构、受力情况及工作原理。通过使用SOLIDWORKS软件成功构建了农用浅耕旋耕刀的三维模型,并在ANSYS Workbench有限元分析软件中模拟刀刃在工作时所受的力,进行了综合性的应力应变及变形分析,并对旋耕刀模型进行了针对性的拓扑优化分析,给出了结果对比。通过深入研究分析结果,得出以下结论:1) 旋耕刀总变形的最大值位于其正切部,即离装配孔最远的位置。这揭示了旋耕刀正切部的刚度较低。2) 最大应力和应变位置主要集中在刀柄与刀背的连接弯折处,与实际生产中旋耕刀口断裂的位置高度吻合。3) 对旋耕刀进行拓扑优化仿真分析,证明可以在减轻刀具质量的同时减小其应力与变形,从而提高刀具的性能与轻量化水平。这验证了有限元分析在预测旋耕刀性能方面的可靠性,也为未来旋耕刀的结构优化提供了参考意义。
In this paper, a shallow cultivation III type rotary tillage cutter as the research object, its geometry, force and working principle are detailed analyzed. By using SOLIDWORKS software, a three- dimen-sional model of agricultural shallow cultivation rotary tillage cutter is successfully build, and in ANSYS Workbench finite element analysis software, the force of the blade at work is simulated, comprehensive stress and strain and deformation analysis and the rotary tillage cutter model for topology optimization analysis are carried out, and the results of comparison is given. Through in-depth study of the results, the following conclusions are drawn: 1) The maximum value of the to-tal deformation of the rotary tillage cutter is located in the tangent part, that is, the furthest from the assembly hole. This reveals that the tangent part of the rotary tillage cutter has low stiffness. 2) The maximum stress and strain position is mainly concentrated in the connection of the handle and the back of the knife, and the actual production of the rotary tillage knife blade fracture position is highly consistent. 3) The topology optimization simulation analysis of the rotary tillage cutter proved that the stress and deformation can be reduced while the quality of the tool is reduced, so as to improve the performance and lightweight level of the tool. This verifies the reliability of the finite element analysis in predicting the performance of the rotary tillage cutter, and also provides a ref-erence for the structural optimization of the rotary tillage cutter in the future.
出处
《建模与仿真》
2024年第2期1414-1423,共10页
Modeling and Simulation
