噪声与振动控制2017，Vol.37Issue(4)：201-205,230,6.DOI:10.3969/j.issn.1006-1355.2017.04.040
波纹管-黏滞流体隔振器特性与实验
Experiment of an Isolator Fabricated with Diaphragm Bellows and Viscous Fluid
摘要
Abstract
For the purpose of protecting sensitive payloads from vibrations, a vibration isolator with large strokes, low dynamic amplification factor and high attenuation rate is proposed. Firstly, a two-parameter vibration isolator composed of diaphragm bellows and viscous fluid is fabricated and experimented. The isolator has approximately an attenuation rate of- 30 dB/dec at high frequencies and its resonance amplification factor is about 6 dB. Then, on the basis of theoretical analyses, a three-parameter vibration isolator is presented by connecting the two-parameter isolator to a series spring. By increasing the fluid damping, the isolation performance is improved. As a result, attenuation of vibration transmission at high frequencies is enhanced and the amplification factor is reduced. Experimental results demonstrate that the amplification factor of the three-parameter isolator is less than 5 dB and the attenuation rate is about - 52 dB/dec. Moreover, after isolation, the RMS values of acceleration responses are reduced by more than 90%in the frequency range of 0-500 Hz.关键词
振动与波/振动隔离/焊接波纹管/黏性流体阻尼/三参数模型Key words
vibration and wave/vibration isolation/diaphragm bellows/viscous fluid damping/three-parameter model分类
通用工业技术引用本文复制引用
谢溪凌,陈燕毫,刁建超,张志谊..波纹管-黏滞流体隔振器特性与实验[J].噪声与振动控制,2017,37(4):201-205,230,6.基金项目
973计划资助项目(2014CB046302) （2014CB046302）
