锤片式粉碎机转子模态分析与试验研究  

Modal Analysis and Experimental Study of Rotor in Hammer Mill

作　　者：李春东 张晓礼 曹丽英[2] 周杨 LI Chundong;ZHANG Xiaoli;CAO Liying;ZHOU Yang(Engineering Training Center,Inner Mongolia University of Science and Technology,Inner Mongolia Baotou 014010,China;Department of Mechanical Engineering,Inner Mongolia University of Science and Technology,Inner Mongolia Baotou 014010,China)

机构地区：[1]内蒙古科技大学工程训练中心,内蒙古包头014010 [2]内蒙古科技大学机械工程学院,内蒙古包头014010

出　　处：《饲料工业》2024年第24期22-26,共5页Feed Industry

基　　金：内蒙古自治区自然科学基金项目[2021MS05065、2022MS05030];内蒙古自治区高等学校青年科技英才支持计划资助[NJYT23046];内蒙古科技大学基本科研业务费专项资金资助[2023QNJS068]。

摘　　要：锤片式粉碎机工作时振动强,其转子的动力学特性是影响整机振动状态的重要因素。本研究以课题组自行研制的锤片式粉碎机转子振动特性为研究对象,采用锤击试验和基于有限元的数值仿真相结合的方法,当试验结果与仿真结果之间的误差小于5%时,获得了更加精确的有限元仿真模型,对粉碎机转子的各阶固有振动频率及其固有振型进行了研究,结果表明,转子低阶模态的振动方式单一,而高阶模态的振动方式是扭转和弯曲的组合振动;粉碎机稳态振动并不是由于转子共振引起的,研究为锤片式粉碎机的减振设计提供理论依据。The hammer mill exhibits strong vibration during operation,and the dynamic characteristics of its rotor are an important factor affecting the overall vibration state of the machine.This study focuses on the vibration characteristics of the rotor in the self-developed hammer mill,utilizing a combined approach of impact testing and numerical simulation based on finite element analysis.A more accurate finite element simulation model was obtained when the error between the experimental and simulation results was less than 5%.The natural vibration frequencies and modes of the rotor at various orders were studied,revealing that the lower-order modes of the rotor exhibit a single vibration pattern,while the higher-order modes display a combination of torsional and bending vibrations.It was found that the steady-state vibration of the mill is not caused by rotor resonance,providing a theoretical basis for the vibration reduction design of the hammer mill.

关 键 词：锤片式粉碎机 转子 模态分析 固有频率 振型 

分 类 号：S817.1[农业科学—畜牧学]