一种新型电涡流阻尼器及阻尼性能研究
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摘要
基于电涡流原理提出一种新型的可用于航天器振动被动抑制的电涡流阻尼器。首先,依托数值仿真建立阻尼器的磁场和力学有限元分析模型,对阻尼器的性能进行分析计算。其次,在振动测试实验台上进行阻尼特性测试,获得了小位移0.1 mm、大位移1 mm下的1 Hz~50 Hz频率范围内正弦激励作用工况下的阻尼系数。然后根据Bouc-Wen滞回模型建立了阻尼器的力学模型,研究了负载、阻尼器结构、交变洛仑兹力之间的关系。研究结果表明这种新型的电涡流阻尼器在外载激励作用下能够输出与仿真结果较为接近的阻尼力,且阻尼系数随激励频率变化具有明显的规律性,根据仿真和实验结果建立的阻尼力力学模型可以很好地用于电涡流阻尼器的力学特性仿真分析。
Based on the eddy current principle, a novel eddy current damper applicable to attenuating vibration of spacecraft is proposed. Firstly, by virtue of the numerical simulation, the magnetic and mechanical finite element model is established to analyze the damping characteristics of the eddy current damper. Then the damping characteristic is tested on a vibration test bench, where the sinusoidal excitation with amplitudes of 0.1mm and 1mm are applied respectively in the frequency range of 1-50 Hz. Finally, the mechanical model of the damper is established based on the Bouc-Wen hysteretic theory, which is used to study the relationship among the loading, the damper structure, and the alternative Lorentz force. The results show that this new eddy current damper can provide a damping force under the excitation loading. The damping force acquired from the test is close to that of the simulation results. Therefore, the presented model can be efficiently used to reflecting the mechanical properties of the eddy current damper.
Based on the eddy current principle, a novel eddy current damper applicable to attenuating vibration of spacecraft is proposed. Firstly, by virtue of the numerical simulation, the magnetic and mechanical finite element model is established to analyze the damping characteristics of the eddy current damper. Then the damping characteristic is tested on a vibration test bench, where the sinusoidal excitation with amplitudes of 0.1mm and 1mm are applied respectively in the frequency range of 1-50 Hz. Finally, the mechanical model of the damper is established based on the Bouc-Wen hysteretic theory, which is used to study the relationship among the loading, the damper structure, and the alternative Lorentz force. The results show that this new eddy current damper can provide a damping force under the excitation loading. The damping force acquired from the test is close to that of the simulation results. Therefore, the presented model can be efficiently used to reflecting the mechanical properties of the eddy current damper.
引文
[1]张博文,王小勇,胡永力.振动对高分辨率空间相机成像影响的集成分析[J].航天返回与遥感,2012,33(2):60-66.
[2]罗敏,王耀兵.航天器振动被动抑制技术[J].现代振动与噪声技术,2012,10:91-95.
[3]曹青松,张敏.横向电涡流阻尼器阻尼力的计算分析[J].噪声与振动控制,2010(05):181-185.
[4]曹青松,王顺发.基于电磁阻尼器振动主动控制技术的研究进展[J].噪声与振动控制,2008(03):1-5.
[5]H.Sodano,J.Bae.Eddy current damping in structures[J].Shock and Vibration Digest,2004,36(6):469.
[6]D.Kienholz,C.Smith,W.Haile.Magnetically damped vibration isolation system for a space shuttle payload[J].International Society for Optics and Photonics,1996:272-280.
[7]B.Ebrahimi,M.Khamesee,F.Golnaraghi.Permanent magnet configuration in design of an eddy current damper[J].Microsystem Technologies,2010.16(1-2):19-24.
[8]L.Zuo,S.Nayfeh,X.Chen.Design and analysis of a new type of electromagnetic damper with increased energy density[J].Journal of Vibration and Acoustics,2011.133(4):041006-1-041006-8.
[9]汪志昊.自供电磁流变阻尼器减振系统与永磁式电涡流TMD的研制及应用[D]:长沙:湖南大学,2011.
[10]邹向阳,王晓天,朱坤,等.多层磁盒与涡流板电磁阻尼器性能研究[J].长春工程学院学报(自然科学版),2008(03):1-3.
[11]楼梦麟,吴和霖,马恒春,等.电磁耗能TMD结构减震效率的振动台试验研究[J].地震工程与工程振动,2003(04):158-164.
[12]祝长生.径向电涡流阻尼器对柔性转子系统振动的控制[J].机械工程学报,2007(12):120-126.
[2]罗敏,王耀兵.航天器振动被动抑制技术[J].现代振动与噪声技术,2012,10:91-95.
[3]曹青松,张敏.横向电涡流阻尼器阻尼力的计算分析[J].噪声与振动控制,2010(05):181-185.
[4]曹青松,王顺发.基于电磁阻尼器振动主动控制技术的研究进展[J].噪声与振动控制,2008(03):1-5.
[5]H.Sodano,J.Bae.Eddy current damping in structures[J].Shock and Vibration Digest,2004,36(6):469.
[6]D.Kienholz,C.Smith,W.Haile.Magnetically damped vibration isolation system for a space shuttle payload[J].International Society for Optics and Photonics,1996:272-280.
[7]B.Ebrahimi,M.Khamesee,F.Golnaraghi.Permanent magnet configuration in design of an eddy current damper[J].Microsystem Technologies,2010.16(1-2):19-24.
[8]L.Zuo,S.Nayfeh,X.Chen.Design and analysis of a new type of electromagnetic damper with increased energy density[J].Journal of Vibration and Acoustics,2011.133(4):041006-1-041006-8.
[9]汪志昊.自供电磁流变阻尼器减振系统与永磁式电涡流TMD的研制及应用[D]:长沙:湖南大学,2011.
[10]邹向阳,王晓天,朱坤,等.多层磁盒与涡流板电磁阻尼器性能研究[J].长春工程学院学报(自然科学版),2008(03):1-3.
[11]楼梦麟,吴和霖,马恒春,等.电磁耗能TMD结构减震效率的振动台试验研究[J].地震工程与工程振动,2003(04):158-164.
[12]祝长生.径向电涡流阻尼器对柔性转子系统振动的控制[J].机械工程学报,2007(12):120-126.
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