| 引用本文: | 汪志昊,田文文,王浩,郜辉,梁瑞军,陈政清.非线性电涡流惯质阻尼器力学性能仿真与试验[J].哈尔滨工业大学学报,2019,51(6):171.DOI:10.11918/j.issn.0367-6234.201808066 |
| WANG Zhihao,TIAN Wenwen,WANG Hao,GAO Hui,LIANG Ruijun,CHEN Zhengqing.Numerical simulation and experimental study on mechanical properties of a nonlinear eddy-current inertial mass damper[J].Journal of Harbin Institute of Technology,2019,51(6):171.DOI:10.11918/j.issn.0367-6234.201808066 |
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| 非线性电涡流惯质阻尼器力学性能仿真与试验 |
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汪志昊1,田文文1,王浩2,郜辉1,梁瑞军2,陈政清3
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(1.河南省生态建材工程国际联合实验室(华北水利水电大学), 郑州 450045; 2.混凝土及预应力混凝土结构教育部重点实验室(东南大学), 南京 210096; 3.风工程与桥梁工程湖南省重点实验室(湖南大学), 长沙 410082)
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| 摘要: |
| 为提高板式电涡流阻尼器(ECD)的耗能减振效率,融合旋转式电涡流阻尼技术与滚珠丝杠式两节点惯质单元,发展与研制了一种非线性电涡流惯质阻尼器(NEMD).首先阐明了NEMD的整体构造与工作原理,然后综合半理论半仿真分析、三维电磁场有限元仿真分析与样机力学性能测试,获得了NEMD的轴向出力特性,提出了旋转式电涡流阻尼计算分析方法,最后总结建立了NEMD的两阶段设计方法.结果表明:NEMD实现了阻尼器惯性质量与电涡流阻尼的双重增效,显著提升了ECD的耗能减振效率；随着NEMD轴向速度的增加,电涡流阻尼力表现出先上升后下降的非线性特征；综合半理论半仿真与三维电磁场有限元仿真的电涡流阻尼力预测方法可以满足NEMD设计要求. |
| 关键词: 惯质阻尼器 旋转式电涡流阻尼 非线性阻尼 惯性力 滚珠丝杠 |
| DOI：10.11918/j.issn.0367-6234.201808066 |
| 分类号:TU352.1 |
| 文献标识码:A |
| 基金项目:国家自然科学基金(4,8)； 国家重点基础研究发展计划(2015CB0,5CB057702) |
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| Numerical simulation and experimental study on mechanical properties of a nonlinear eddy-current inertial mass damper |
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WANG Zhihao1,TIAN Wenwen1,WANG Hao2,GAO Hui1,LIANG Ruijun2,CHEN Zhengqing3
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(1.International Joint Research Lab for Eco-building Materials and Engineering of Henan Province (North China University of Water Resources and Electric Power), Zhengzhou 450045, China;2.Key Lab of Concrete and Prestressed Concrete Structure (Southeast University), Ministry of Education, Nanjing 210096, China;3.Key Lab for Wind and Bridge Engineering of Hunan Province (Hunan University), Changsha 410082, China)
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| Abstract: |
| To improve the energy dissipation efficiency of a planar eddy current damper (ECD), a nonlinear eddy-current inertial mass damper (NEMD) combining the rotary eddy-current damping with two-node inertial mass element based on ball screw mechanism is proposed in this paper. Overall conformations and working principles of the NEMD were well demonstrated. Through semi-theoretical and semi-numerical analysis, three-dimensional finite-element simulation analysis as well as mechanical performance test, axial force characteristics, and calculation method for rotary eddy-current damping of the NEMD were then obtained. A two-stage design method of the NEMD based on the semi-theoretical and semi-numerical analysis and three-dimensional electromagnetic finite-element simulation analysis was established. Results show that the double amplification of the inertial mass and the equivalent eddy-current damping coefficient of the NEMD was realized, which significantly improved the energy dissipation efficiency of the ECD. As the axial velocity of the NEMD increased, corresponding eddy-current damping force increased at the beginning, and then the eddy-current damping force began to decrease nonlinearly when the force reached a maximum. The computational accuracies of the semi-theoretical, semi-numerical analysis, and three-dimensional electromagnetic finite-element simulation analysis on the eddy-current damping could basically meet the design requirements of the NEMD. |
| Key words: inertial mass damper rotary eddy-current damping nonlinear damping inertial force ball screw |
