基于磁荷叠加增强的磁扭负刚度低频隔振研究
收稿日期: 2025-04-25
修回日期: 2025-06-26
录用日期: 2025-07-01
网络出版日期: 2025-07-15
基金资助
国家自然科学基金(12002114)
Low-frequency vibration isolation of magnetic torsional negative stiffness using magnetic charge superposition enhancement
Received date: 2025-04-25
Revised date: 2025-06-26
Accepted date: 2025-07-01
Online published: 2025-07-15
Supported by
National Natural Science Foundation of China(12002114)
低频扭转振动不仅会降低轴系结构的动力传输效率，还会严重威胁轴系结构的安全运行，成为低频振动控制领域中的研究热点。针对当前应用于轴系结构低频隔振的负刚度机构存在强非线性、负刚度小的问题，基于磁荷叠加原理提出一种高磁扭负刚度扭转隔振器设计方法。通过将沿环向磁化的磁瓦按磁荷叠加方式布置获取的高磁扭负刚度弹簧（High Magnetic Torsional Negative Stiffness Spring， HMTS）与平面涡卷扭簧并联开展轴系结构的低频扭振隔离特性分析，采用磁荷模型建立高磁扭负刚度弹簧的扭矩、磁扭负刚度理论模型，结合COMSOL有限元软件对比研究高磁扭负刚度弹簧与传统磁负刚度弹簧的扭转负刚度特性，利用Ansys Workbench仿真分析平面涡卷弹簧的力学性能，建立隔振系统的动力学模型，通过谐波平衡法仿真研究隔振系统的低频扭振隔离性能，制备并测试高磁扭负刚度扭转隔振器的扭转隔振性能。结果表明：基于磁荷叠加增强的高磁扭负刚度较传统磁负刚度具有高出近1倍的负刚度数值，显著拓宽了轴系扭转振动的低频隔振带宽。
董光旭 , 施永伟 , 罗亚军 , 张希农 , 陈恩伟 , 魏浩征 , 陈品 . 基于磁荷叠加增强的磁扭负刚度低频隔振研究[J]. 航空学报, 2026 , 47(2) : 232160 -232160 . DOI: 10.7527/S1000-6893.2025.32160
The low-frequency torsional vibration， which can not only reduce the power transmission efficiency of the shaft structures， but also threaten the operation safety of them， has been the research hotspot in the field of low-frequency vibration control. As the existing negative stiffness mechanism employed for low-frequency torsional isolation in shafts suffers from the strong nonlinearity and low negative stiffness， the design method of torsional vibration isolator with high magnetic torsional negative stiffness is proposed via magnetic charge superposition. The high magnetic torsional negative stiffness composed of tiles magnetized circumferentially is connected with plane spiral spring in parallel to analyze the low-frequency torsional isolation performance of the shaft structures. Referring to the magnetic charge model， the nonlinear torque and torsional negative stiffness of the High Magnetic Torsional negative Stiffness spring （HMTS） are derived， and then demonstrated via the numerical simulation of COMSOL finite element software in comparison with that of the traditional magnetic negative stiffness array. Besides that， the mechanical properties of plane spiral spring are also investigated using Ansys Workbench. With the effects of above analysis， the governing equations of the proposed isolator can be established， and relevant low-frequency isolation performance is studied with harmonic balance approach. A test rig of the isolator is set up to determine its low-frequency torsional isolation performance. The results show that the magnitude of high magnetic torsional negative stiffness spring is twice as high as that of the traditional magnetic negative stiffness ones， which can significantly broaden the isolation bandwidth as well.
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