Damping analysis of a permanent magnet eddy current damper with CuFe alloy stator inner cylinder under impact load

IF 2.5 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials Pub Date : 2025-04-25 DOI:10.1016/j.jmmm.2025.173115

Sendi Pu , Liqun Wang , Hao Guo , Guolai Yang

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Abstract

The cylindrical permanent magnet linear eddy current damper consists of two parts: the stator and the mover. The mover is composed of a magnetic group and a motion rod, while the stator is a composite cylinder made of an inner conductor cylinder and an outer magnetic cylinder. To explore the damping characteristics of a copper-iron alloy with both high conductivity and high magnetic permeability when applied to the inner cylinder of the damper stator in intensive impact environment, a dynamic model of the eddy current damper was established. Through finite element analysis, the magnetic field distribution and damping characteristics under impact loads were obtained for inner cylinders made of different compositions of copper-iron alloy. The effects of different electrical conductivities, magnetization characteristics, inner cylinder thickness, and outer cylinder thickness on the magnetic field distribution and damping characteristics were further studied. The research results show that the application of this copper-iron alloy in the stator inner cylinder of the eddy current damper can effectively improve the damping characteristics.

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冲击载荷下CuFe合金定子内筒永磁涡流阻尼器的阻尼分析

圆柱形永磁直线涡流阻尼器由定子和动器两部分组成。动器由磁性组和运动杆组成，定子是由内导体筒和外磁性筒组成的复合筒体。为研究高导电性、高磁导率铜铁合金在强冲击环境下应用于阻尼器定子内筒的阻尼特性，建立了涡流阻尼器的动力学模型。通过有限元分析，得到了不同成分铜铁合金内缸在冲击载荷作用下的磁场分布和阻尼特性。进一步研究了不同电导率、磁化特性、内筒厚度和外筒厚度对磁场分布和阻尼特性的影响。研究结果表明，将该铜铁合金应用于涡流阻尼器定子内缸，可有效改善涡流阻尼器的阻尼特性。

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来源期刊

Journal of Magnetism and Magnetic Materials 物理-材料科学：综合

CiteScore

5.30

自引率

11.10%

发文量

1149

审稿时长

59 days

期刊介绍： The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public. Main Categories: Full-length articles: Technically original research documents that report results of value to the communities that comprise the journal audience. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged. In addition to general topics covering all areas of magnetism and magnetic materials, the full-length articles also include three sub-sections, focusing on Nanomagnetism, Spintronics and Applications. The sub-section on Nanomagnetism contains articles on magnetic nanoparticles, nanowires, thin films, 2D materials and other nanoscale magnetic materials and their applications. The sub-section on Spintronics contains articles on magnetoresistance, magnetoimpedance, magneto-optical phenomena, Micro-Electro-Mechanical Systems (MEMS), and other topics related to spin current control and magneto-transport phenomena. The sub-section on Applications display papers that focus on applications of magnetic materials. The applications need to show a connection to magnetism. Review articles: Review articles organize, clarify, and summarize existing major works in the areas covered by the Journal and provide comprehensive citations to the full spectrum of relevant literature.