摘要
本文研究了新型惯质调谐质量阻尼器(novel tuned mass damper inerter,NTMDI)的安装方法对其优化设计与减振性能的影响。详细介绍了NTMDI-R(反向安装的NTMDI)的力学模型,并采用经典固定点理论对NTMDI-R进行了优化设计,得到了NTMDI-R最优结构参数的解析式;对比研究了NTMDI-R与现有四种经典调谐质量阻尼器(TMD、TMDI、VTMD和NTMDI)在简谐激励和随机激励下的减振效果,并探究了安装方法对NTMDI-R减振性能的影响。结果表明:正、反向安装的两种减振器(NTMDI和NTMDI-R)优化参数不同,安装方法对其减振性能有较大影响。当表观质量比β小于0.1时,NTMDI-R的减振效果差于NTMDI;而β大于0.1时,NTMDI-R的减振效果与NTMDI基本一致,因此采用NTMDI进行结构减振应明确其安装方向。基础加速度和荷载力分别作用下,NTMDI-R的减振效果相对于NTMDI分别降低了3.9%和4.7%。
This study investigates the influence of installation methods on the optimization design and vibration reduction perfor-mance of a novel tuned mass damper inerter(NTMDI).Firstly,the mechanical model of NTMDI-R(reverse-installed NTMDI)is introduced in detail,and its optimization design of NTMDI-R is performed using classical fixed-point theory,resulting in analyti-cal expressions for the optimal structural parameters of NTMDI-R.Subsequently,a comparative study is conducted to analyze the vibration reduction effects of NTMDI-R and four existing classical tuned mass dampers(TMD,TMDI,VTMD,and NTMDI)under harmonic and random excitations,while also investigating the influence of installation methods on the vibration reduction per-formance of NTMDI-R.The results demonstrate that the optimized parameters of the two dampers(NTMDI and NTMDI-R)dif-fer,and the installation method has a significant impact on their vibration reduction performance.When the apparent mass ratioβis less than 0.1,NTMDI-R exhibits a lower vibration reduction effect compared to NTMDI.However,whenβexceeds 0.1,the vi-bration reduction effect of NTMDI-R becomes similar to that of NTMDI.Therefore,when adopting NTMDI for structural vibra-tion reduction,the installation direction should be specified.Under base acceleration and load force conditions,the vibration reduc-tion effect of NTMDI-R is reduced by 3.9%and 4.7%,respectively,compared to NTMDI.
作者
何书勇
李寿英
李亚峰
罗帅
陈政清
HE Shuyong;LI Shouying;LI Yafeng;LUO Shuai;CHEN Zhengqing(College of Civil Engineering,Hunan University,Changsha 410082,China;Key Laboratory for Wind and Bridge Engineering of Hunan Province,Hunan University,Changsha 410082,China;Earthquake Engineering Research and Test Center,Guangzhou University,Guangzhou 510006,China)
出处
《振动工程学报》
北大核心
2025年第2期383-392,共10页
Journal of Vibration Engineering
基金
国家自然科学基金面上项目(52378508)
广东省基础与应用基础研究基金资助项目(2022A1515110709)。
关键词
振动控制
调谐质量阻尼器
惯质
固定点理论
安装方法
优化设计
vibration suppression
tuned mass damper
inerter
fixed-point theory
installation method
optimal design
