基于ANSYS的甜玉米果穗圆锯片静力学和模态分析

Static and modal analysis of sweet corn circular saw blades based on ANSYS

目的:为确保圆锯片切割甜玉米果穗头时不发生共振,保证切割精度和安全性,对圆锯片进行设计和分析。方法:使用SolidWorks软件建立圆锯片的简化三维模型,利用ANSYS有限元分析软件对圆锯片进行静力学和模态分析。结果:通过静力学分析可知,圆锯片的最大等效应变为200 T/3000 r/min的6.3831×10^(-5)mm/mm,最大等效应力为200 T/3000 r/min的1.2665×10^(7)MPa,等效应变和等效应力均集中于圆锯片中心部连接处;通过模态分析可知,200 T/3000 r/min的前六阶固有频率变化范围为435.26~1345.70 Hz,该圆锯片的最大工作频率远低于其一阶模态,圆锯片不会发生共振,满足工作需求。结论:齿数和转速为200 T/3000 r/min的圆锯片高速旋转切割甜玉米果穗头时具备安全性与可靠性,为后续圆锯片结构优化设计提供了理论依据。

Objective:To ensure that the circular saw blade does not resonate when cutting sweet corn ear heads,and to ensure cutting accuracy and safety,the circular saw blade is designed and analyzed.Methods:SolidWorks software was used to establish a simplified three-dimensional model of the circular saw blade,and based on this,mechanical analysis on it was conducted in combination with actual working conditions.ANSYS finite element analysis software was used to perform static and modal analysis on the circular saw blade.Results:According to static analysis,the maximum equivalent effect of the circular saw blade is 6.3831×10^(-7)mm/mm at 200 T/3000 r/min,with a maximum equivalent stress of 1.2665×10^(7)MPa at 200 T/3000 r/min.Both equivalent strain and equivalent stress are concentrated at the connection of the center of the circular saw blade.Through modal analysis,it is known that the first six natural frequencies of the 200 T/3000 r/min range from 435.26 to 1345.70 Hz.The maximum operating frequency of the circular saw blade is much lower than its first mode,and the circular saw blade will not resonate,meeting the working requirements.Conclusion:The high-speed rotation of a circular saw blade with a tooth count and rotation speed of 200 T/3000 r/min for cutting sweet corn ear heads has safety and reliability,providing a theoretical basis for the subsequent optimization design of the circular saw blade structure.