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论文:2016,Vol:34,Issue(1):18-24 |
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引用本文： |
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李斌, 牛文超, 徐兆懿. 电涡流耗能动力吸振器设计与试验研究[J]. 西北工业大学学报 |
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Li Bin, Niu Wenchao, Xu Zhaoyi. Eddy Current Vibration Absorber Design and Experiments[J]. Northwestern polytechnical university |
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| 电涡流耗能动力吸振器设计与试验研究 |
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| 李斌, 牛文超, 徐兆懿 |
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| 西北工业大学 航空学院, 陕西 西安 710072 |
| 摘要: |
| 针对飞机垂尾抖振抑制的需要,提出一种空间布局紧凑、基于非接触式电涡流耗能机理、阻尼可设计的动力吸振器设计方案。电涡流耗能机制的引入保证该动力吸振器具有良好的环境适应性、耐久性和可靠性。基于电磁场理论,建立了电涡流阻尼力的计算模型,获得电磁阻尼的设计规律,通过与试验结果对比,验证了电涡流阻尼模型的准确性。并以等效悬臂梁结构为对象,应用最优参数设计原理确定动力吸振器参数,设计制造了动力吸振器样机。试验结果表明,该电涡流动力吸振器具有良好的吸振性能,最大减幅比可达98%。 |
| 关键词:
动力吸振器
永磁体
电涡流阻尼力
抖振抑制
最优设计参数
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| Eddy Current Vibration Absorber Design and Experiments |
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| Li Bin, Niu Wenchao, Xu Zhaoyi |
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| College of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China |
| Abstract: |
| Aiming at the need of vertical tail buffet suppression, a design scheme of dynamic vibration absorber with compact layout and adjustable damping is proposed; this is based on the mechanism of eddy current energy dissipation. Eddy current energy dissipation can ensure that the dynamic vibration absorber has good environmental adaptability, durability and reliability. Based on the electromagnetic theory, the calculation model of eddy current damping force is established and the design rule of eddy damping force is concluded. Through the comparison between the calculations and the experiments, the validation and accuracy of eddy current damping force model are verified. Taking an equivalent cantilever beam system as the object of vibration control, and on the basis of the theory of dynamic vibration absorber optimal design, we determined the optimal parameters of dynamic vibration absorber and completed the design and manufacture of eddy current dynamic vibration absorber prototype. Experimental results show that the maximum amplitude of cantilever beam can be decreased at most by 98%, and the proposed eddy current dynamic vibration absorber has obvious vibration-absorption effect. |
| Key words:
buffeting
calculations
damping
design
design of experiments
degrees of freedom(mechanics)
eddy currents
energy absorption
energy dissipation
experiments
geometry
mathematical models
modal analysis
optimization
permanent magnets
reliability
saturation magnetization
schematic diagrams
vectors
vibration analysis
buffet suppression
dynamic vibration absorbers
eddy current damping
optimal design parameters
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| 收稿日期: 2015-09-24
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金(1172238)与中央高校基本科研业务费专项资金(3102014KYJD015)资助 |
| 通讯作者:
Email： |
| 作者简介: 李斌(1975-),西北工业大学教授、博士,主要从事结构动力学与控制研究。
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| 作者相关文章 |
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| 李斌 在本刊中的所有文章 |
| 牛文超 在本刊中的所有文章 |
| 徐兆懿 在本刊中的所有文章 |
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