磁耦合调谐质量阻尼器的参数优化及减振效果  

Parameter Optimization and Vibration Control Effect of TMD with Magnetic Coupling

作　　者：李晓华[1] 王宝基[1] 薛中会[1] 

机构地区：[1]河南理工大学物理化学学院,河南焦作454000

出　　处：《河南科技大学学报（自然科学版）》2014年第4期86-91,9-10,共6页Journal of Henan University of Science And Technology:Natural Science

基　　金：国家自然科学基金项目(11003003);河南省基础与前沿技术研究计划基金项目(112300410277);河南省科技厅重点攻关项目(122102310279);河南省高校青年骨干教师基金项目

摘　　要：在调谐质量阻尼器的基础上,将黏性阻尼器换成电磁阻尼器,建立了3个自由度磁耦合调谐质量阻尼系统的力学模型及其运动学方程。利用傅里叶变换导出了该系统随外激励变化的傅里叶响应函数。根据固定点法和参数组合筛选法对系统的参数进行了优化处理,得到了最优频率比、电阻尼比和耦合参数。减振效果显示,磁耦合调谐质量阻尼器比调谐质量阻尼器的减振效果提高了20%左右。The mechanics model of tuned mass damper(TMD) system with magnetic coupling was established by switching from viscous damper to magnet damper. The kinematics equation of the system with three-degree was derived. Using the Fourier transform,the Fourier response function of the system to the external force was deduced. The optimal frequency ratio,resistance ratio and coupling parameter of TMD with magnetic coupling were obtained by the fixed-point theory and the parameter combination screening. And the research on vibration reduction effect shows that the vibration control effect of TMD with magnetic coupling is improved by about20% than that of TMD.

关 键 词：调谐质量阻尼器 磁耦合 参数优化 傅里叶变换 

分 类 号：TU473[建筑科学—结构工程]