调谐惯质阻尼器动力试验和参数识别  

Dynamic testing and parameter identification for tuned viscous mass dampers

作　　者：纪晓东[1] 程禹皓 贾若凡 余越 Ji Xiaodong;Cheng Yuhao;Jia Ruofan;Yu Yue(Key Laboratory of Civil Engineering Safety and Durability of Ministry of Education,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学土木工程安全与耐久教育部重点实验室,北京100084

出　　处：《Journal of Southeast University(English Edition)》2024年第2期111-119,共9页东南大学学报（英文版）

基　　金：The National Natural Science Foundation of China(No.52078277);Foundation of the Institute for Guoqiang of Tsinghua University(No.2020GQC0003).

摘　　要：研发了一种新型调谐惯质阻尼器(TVMD)装置,该装置分别采用电涡流与金属弹簧作为TVMD的阻尼元件与弹簧元件.首先,对该TVMD装置进行动力试验,研究其动力特性.然后,提出4种基于试验数据识别TVMD参数的方法,即峰值点拟合法、滞回曲线拟合法、时程拟合法和传递函数拟合法.动力试验结果表明:TVMD具有惯性质量放大效应和阻尼增益效应;弹簧元件和惯容元件均表现出理想的线性特性,而阻尼元件由于电涡流阻尼固有属性和TVMD装置中存在的摩擦,表现出非线性特性.参数识别结果表明:4种方法均能合理确定TVMD参数,其中,传递函数拟合法能提供用于调谐设计的等效阻尼系数,而其他3种方法能识别非线性阻尼模型的参数;滞回曲线拟合法和时程拟合法具有更高的参数识别精度,而峰值点拟合法和传递函数拟合法具有更高的计算效率.A novel type of tuned viscous mass damper(TVMD)device incorporating eddy current damping and metal springs as its damping and spring elements,respectively,was developed.First,dynamic tests of the TVMDs were conducted to investigate their dynamic characteristics.Subsequently,four methods were proposed to identify the TVMD parameters from the test data:the peak point fitting method,hysteretic curve fitting method,time-history fitting method,and transfer function fitting method.The dynamic test results indicate that the TVMD exhibits the inertial mass amplification and damping enhancement effects.The spring and inerter elements demonstrate ideal linear behavior,while the damping element exhibits nonlinearity,primarily owing to the nature of eddy current damping and inherent friction in the TVMD device.The parameter identification results indicate that all four methods can reasonably determine the TVMD parameters.The transfer function fitting method can provide an equivalent damping coefficient useful for tuning design,while the other three methods can identify parameters of nonlinear damping models.The hysteretic curve fitting and time-history fitting methods exhibit improved accuracy in parameter identification,while the peak point fitting and transfer function fitting methods exhibit higher computational efficiency.

关 键 词：调谐惯质阻尼器(TVMD) 动力试验 参数标定 阻尼非线性 振动控制 

分 类 号：TU398.9[建筑科学—结构工程]