电磁激振器与结构的耦合动力学特性分析  

Analysis of Coupling Dynamics Characteristics of Electromagnetic Exciter and Structure

作　　者：杨志强 臧朝平[1] 张根辈[1] YANG Zhiqiang;ZANG Chaoping;ZHANG Genbei(College of Energy and Power,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016

出　　处：《机械制造与自动化》2022年第2期9-11,45,共4页Machine Building & Automation

摘　　要：基于以电压为延拓参数的定频试验测试方法,研究定频试验测试方法的机理——电磁激振器与结构耦合动力学特性。通过模态试验测试辨识电磁激振器机电参数,建立线性结构、强非线性结构与激振器耦合动力学模型,通过仿真测试验证激振器与强非线性结构耦合时,会出现强非线性结构特有的第二类力跌落现象。Based on the fixed-frequency test method with voltage as the continuation parameter,the mechanism of the fixed-frequency test method—the dynamic characteristics of the coupling between electromagnetic vibrator and structure was studied.The electromechanical parameters of the electromagnetic exciter were identified through modal tests,and the linear structure,strong nonlinear structure and the coupling dynamics model of the exciter were constructed.The simulation test verifies that when the exciter is coupled to a strong nonlinear structure,the second type of force drop phenomenon unique to the strong nonlinear structure will occur.

关 键 词：定频试验 电磁激振器 强非线性结构 力跌落现象 

分 类 号：V231.96[航空宇航科学与技术—航空宇航推进理论与工程]