基于COMSOL的板式电涡流阻尼器数值模拟分析
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拜立岗(1989-),男,博士,工程师,主要从事工程结构振动控制研究与应用。E-mail:bailigang2008@126.com

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国家自然科学基金项目(51578273);教育部长江学者和创新团队发展计划(IRT_17R51)


Numerical simulation analysis of a planar eddy damper based on COMSOL
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    摘要:

    电涡流阻尼器具有无需与结构接触、无磨损的特点,不存在如黏滞阻尼器容易出现漏液等问题。为了研究板式电涡流阻尼器的性能,首先对板式电涡流阻尼器的理论进行简述;然后基于电涡流阻尼系数测定试验,对采用COMSOL进行电涡流阻尼模拟方法和模型的可靠性进行验证;最后采用COMSOL和验证后的模拟方法对板式电涡流阻尼器的导磁间隙、导体板厚度、导体板背铁厚度、磁铁背铁厚度等进行参数分析。验证板式电涡流阻尼基本符合黏滞阻尼理论的假定,也证明采用COMSOL进行阻尼系数模拟的结果是可信的;分析发现导磁间隙和导体板厚度均对阻尼系数影响较大,而导体板和磁铁背铁的厚度对阻尼几乎没有影响。

    Abstract:

    The eddy current damper (ECD) has the characteristics of no contact and friction with the structure; unlike viscous damper, ECD has no problems, such as liquid leakage. First, the theory of planar ECD was introduced to investigate the performance of a planar ECD. Then, the reliability of the simulation method and the model for the planar ECD based on the software COMSOL was verified in accordance with the test on ECD coefficients. Finally, COMSOL was used to analyze the parameters of the planar ECD, such as conductive clearance, conductor thickness, conductor’s back iron thickness, and magnet’s back iron thickness. The planar ECD basically conforms to the assumption of viscous damping theory, and the results of damping coefficient simulation using COMSOL are also authentic. Thus, the conductive clearance and thickness of conductors have considerable influence on the damping coefficient, while the back iron thickness of the conductor and magnet has minimal influence.

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拜立岗,施志国,施卫星,韩建平,张啟乐.基于COMSOL的板式电涡流阻尼器数值模拟分析[J].地震工程学报,2023,(1):86-93. BAI Ligang, SHI Zhiguo, SHI Weixing, HAN Jianping, ZHANG Qile. Numerical simulation analysis of a planar eddy damper based on COMSOL[J]. China Earthquake Engineering Journal,2023,(1):86-93.

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  • 在线发布日期: 2023-01-21