约束阻尼减振镗杆的动力学性能  

Dynamic performance of boring bar with constrained damping

作　　者：乔艳梅 王绍清 任洪梅[1] Qiao Yanmei;Wang Shaoqing;Ren Hongmei(School of Mechanical and Electrical Engineering,Shandong Chemical Engineering Vocational College,Shandong Weifang,262700,China;School of Mechanical and Automotive Engineering,Qingdao University of Technology,Shandong Qingdao,266000,China;Facility Horticulture Laboratory of Universities in Shandong,Weifang University of Science and Technology,Shandong Weifang,262700,China)

机构地区：[1]山东化工职业学院机电工程学院,山东潍坊262700 [2]青岛理工大学机械与汽车工程学院,山东青岛266000 [3]潍坊科技学院山东省高校设施园艺实验室,山东潍坊262700

出　　处：《机械设计与制造工程》2022年第8期31-33,共3页Machine Design and Manufacturing Engineering

基　　金：国家自然科学基金资助项目(51375248);设施园艺专项(2021XKJS24);寿光市科技计划(2019JH14)。

摘　　要：为提高约束阻尼减振镗杆的动刚度,建立了该结构的有限元简化模型,分析了该结构的振动特性,探讨了结构参数对约束阻尼减振镗杆动力学性能的影响。结果表明:温度未达到材料屈曲点时,结构的固有频率随着温度的增加而减小,达到屈曲点时,结构的固有频率出现了阶跃;增加刀杆长度,结构的固有频率随之增大;结构的固有频率随约束层厚度的增加而增大。In order to improve the dynamic stiffness of boring bar with constrained damping,a simplified finite element model of the structure is established,the vibration characteristics of the structure are analyzed,and the influence of structural parameters on the dynamic performance of boring bar with constrained damping is discussed.The results show that the natural frequency of the structure increases with the thickness of the constraining layer;the natural frequency of the structure increases with increasing the length of the shank;when the temperature does not reach the critical point of material buckling,the natural frequency of the structure decreases with increasing temperature;after reaching the critical point of buckling,the natural frequency appears a step.

关 键 词：约束阻尼 减振镗杆 有限元 动力学性能 

分 类 号：O34[理学—固体力学]