三磁体型隔振器的性能分析和实验研究

柴凯1,朱石坚2,杨庆超2,刘树勇1

振动与冲击 ›› 2018, Vol. 37 ›› Issue (6) : 36-41.

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (6) : 36-41.
论文

三磁体型隔振器的性能分析和实验研究

  • 柴凯1,朱石坚2,杨庆超2,刘树勇1
作者信息 +

Analysis and test for the performances of a tri magnet vibration isolator #br#  

  • CHAI Kai1,ZHU Shijian2,YANG Qingchao2,LIU Shuyong1
Author information +
文章历史 +

摘要

针对潜艇机械设备的低频隔振难题,提出了一种三磁体型隔振器。首先,通过等效磁荷法建立了矩形磁铁的磁力和刚度解析模型,并对矩形磁铁的结构参数进行了优化设计;然后,利用矩形永磁铁提出了一种三磁体型隔振器,通过曲线拟合得到了刚度的近似表达式,建立了隔振系统的动力学方程,利用谐波平衡法得到了主共振响应的一次近似解析解,探究了激励幅值和阻尼比对系统力传递率的影响;最后,搭建了三磁体型隔振器试验台,对三磁体型隔振器进行了激振实验分析,测定了不同工况下的力传递率,并与相应线性系统进行对比。结果表明:三磁体型隔振器具有高静低动的刚度特性,有效降低了共振区域的共振峰值,为提高潜艇机械设备振动的低频隔离效果提供了一种新的思路。

Abstract

A trimagnet vibration isolator was proposed for the purpose of lowfrequency vibration isolation of submarine mechanical equipments. The analytical magnetic force and stiffness models were established based on the equivalent charge method and the structure parameters of the rectangular magnet were optimized. A trimagnet vibration isolator with the rectangular permanent magnets was proposed. The approximate expression of the magnetic stiffness was obtained through curve fitting. The dynamic equation of the vibration isolation system was built, the first approximation of the primary resonance was achieved with the harmonic balance method, and the effects on the force transmissibility caused by the excitation amplitude and damping ratio were discussed. A trimagnet vibration isolator test rig was designed, and experiments were carried out to evaluate the force transmissibility under excitations with different frequency, and to compare with those of the corresponding linear vibration isolator.The results show that the trimagnet vibration isolator with the characteristics of highstaticlowdynamicstiffness and smaller peaks of resonance, can provide a novel approach for the lowfrequency vibration isolation of submarine mechanical equipments.

关键词

等效磁荷法 / 矩形磁铁 / 隔振系统 / 高静低动 / 潜艇机械设备

Key words

equivalent charge method / rectangular permanent magnet / vibration isolation system / high-static-low-dynamic-stiffness / submarine mechanical equipment

引用本文

导出引用
柴凯1,朱石坚2,杨庆超2,刘树勇1. 三磁体型隔振器的性能分析和实验研究[J]. 振动与冲击, 2018, 37(6): 36-41
CHAI Kai1,ZHU Shijian2,YANG Qingchao2,LIU Shuyong1. Analysis and test for the performances of a tri magnet vibration isolator #br#  [J]. Journal of Vibration and Shock, 2018, 37(6): 36-41

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