基于有限元法的梁的机械阻抗研究  

Based on Finite Element Analysis of Mechanical Impedance of Beam

作　　者：吴建中[1] 张军[1] 袁圆[1] 陈超[1] 李义[1] 

机构地区：[1]安徽理工大学机械工程学院,安徽淮南232001

出　　处：《煤矿机械》2011年第3期86-89,共4页Coal Mine Machinery

摘　　要：利用机械阻抗基础理论对悬臂梁进行分析,得到机械阻抗动态分析理论数据;利用有限元软件(ANSYS)对梁进行模态分析得到固有频率及振型,在此基础上进一步做动态响应仿真分析,通过数据后处理得到梁的机械阻抗的频率特性及其对数幅频特性,并与理论数据进行比较;提出利用有限元进行机械阻抗分析的扩展应用与展望。Applied basic theory of mechanical impedance to analyze cantilever beam. It can obtain the theoretical data of mechanical impedance. Modal analysis is performed by using ANSYS software to obtain free running frequency and mode of vibration of beam. On the basis of modal analysis, dynamic emulation analysis is performed to obtain frequency characteristics and logarithm amplitude frequency characteristic of mechanical impedance and compared with the theoretical data. It is put forward that mechanical impedance of FEA （finite element analysis） is applied to the expansion of application and prospects.

关 键 词：有限元 机械阻抗 幅频特性 共振频率 

分 类 号：TH113.1[机械工程—机械设计及理论] TP39[自动化与计算机技术—计算机应用技术]