非对称非线性质量阻尼器试验研究及鲁棒性分析  

Tests and robustness analysis for asymmetric NES

作　　者：王菁菁 张超[3] 刘志彬 李浩博 WANG Jingjing;ZHANG Chao;LIU Zhibin;LI Haobo(College of Civil Engineering,Guangzhou University,Guangzhou 510006,China;Failure Mechanics&Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province,Sichuan University,Chengdu 610065,China;College of Civil Engineering,Hunan University of Technology,Zhuzhou 412007,China;School of Mechanics and Engineering Science,Shanghai University,Shanghai 200444,China)

机构地区：[1]广州大学土木工程学院,广州510006 [2]四川大学破坏力学与工程防灾减灾四川省重点实验室,成都610065 [3]湖南工业大学土木工程学院,湖南株洲412007 [4]上海大学力学与工程科学学院,上海200444

出　　处：《振动与冲击》2022年第3期176-182,237,共8页Journal of Vibration and Shock

基　　金：国家自然科学基金(52078151);破坏力学与工程防灾减灾四川省重点实验室2020年开放课题(2020JDS0022);广州市科技计划(201906010012)。

摘　　要：提出一种新型控制装置——非对称非线性能量阱(非对称NES),以解决调谐质量阻尼器(TMD)对主体结构频率敏感和非线性能量阱(NES)对能量输入敏感的问题。非对称NES以一型NES为基础,将非线性弹簧拉离初始位置,加入线性弹簧与之平衡,所得恢复力具有线性和非线性的综合特点。在某缩尺3层钢框架结构上附加非对称NES进行试验,在脉冲型荷载作用下分析两类受控主体结构的结构响应。并使用经试验验证的数值模型,在某6层主体结构上分别附加非对称NES、TMD和一型NES进行数值研究,对比脉冲型荷载和地震作用下的结构响应。分析结果表明,非对称NES控制性能优越,兼备频率鲁棒性和能量鲁棒性,在输入能量和主体结构频率改变时均展现出良好的控制效果。Here,a new control device called asymmetric nonlinear energy sink(NES)was proposed to solve problems of tuned mass damper(TMD)being sensitive to main structure frequency and NES being sensitive to energy input.The asymmetric NES was based on I type NES,its nonlinear spring was pulled away from its initial position and a linear spring was added to balance the nonlinear spring,its restoring force obtained could have comprehensive characteristics of linearity and nonlinearity.An asymmetric NES was added to a certain scaled 3-story steel frame structure to conduct tests,and structural responses of 2 kinds of controlled main structures under impulse load were analyzed.Asymmetric NES,TMD and I type NES were added to a 6-story main structure,respectively,the numerical model verified with tests was used to do numerical simulations and compare structural responses under impulse load and earthquake.The analysis results showed that the proposed asymmetric NES has superior control performance with both frequency robustness and energy robustness;it can reveal the good control effect when input energy and main structure frequency change.

关 键 词：结构控制 非线性能量阱(NES) 能量鲁棒性 频率鲁棒性 数值模拟 

分 类 号：O328[理学—一般力学与力学基础] O322[理学—力学]