微振动隔振器动态阻尼系数的测试方法

doi:10.7527/S1000-6893.2013.0414

固体力学与飞行器总体设计

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微振动隔振器动态阻尼系数的测试方法

王杰¹, 赵寿根¹, 吴大方¹, 罗敏²

1. 北京航空航天大学航空科学与工程学院, 北京 100191;
2. 中国空间技术研究院, 北京 100086

收稿日期:2013-04-17 修回日期:2013-10-07 出版日期:2014-02-25 发布日期:2013-10-24
通讯作者: 赵寿根，Tel.：010-82316164 E-mail：zshougen@buaa.edu.cn E-mail:zshougen@buaa.edu.cn
作者简介:王杰男，博士研究生。主要研究方向：结构振动控制，大型复杂结构数值仿真。E-mail：jiew1989@163.com；赵寿根男，副教授，硕士生导师。主要研究方向：结构动力学，智能材料与结构等。Tel：010-82316164 E-mail：zshougen@buaa.edu.cn
基金资助:
CAST创新基金（CAST201208）；国防基础科研计划（B2120110011）

A Test Method of Dynamic Damping Coefficient of Micro-vibration Isolators

WANG Jie¹, ZHAO Shougen¹, WU Dafang¹, LUO Min²

1. School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China;
2. China Academy of Space Technology, Beijing 100086, China

Received:2013-04-17 Revised:2013-10-07 Online:2014-02-25 Published:2013-10-24
Supported by:
CAST Innovation Foundation of China (CAST201208); Defense Basic Research Program (B2120110011)

摘要/Abstract

摘要：

阻尼系数的确定对于隔振设计非常重要。针对大阻尼黏性流体微振动隔振器，提出一种确定三参数模型阻尼系数的机械阻抗等效理论与测试方法，将三参数模型简化为等效的便于试验测试的两参数隔振模型。将由自行设计的试验系统测量得到的阻尼系数和刚度系数输入到ADAMS仿真模型中，得到等效阻尼系数，并与直接采用迟滞环法得到的隔振器的等效阻尼系数进行对比分析。研究结果显示，两种方法得到的结果具有良好的一致性，证明了本文方法的可行性和可用性。本文方法还可得到以往传统方法难以得到的动态阻尼系数随频率的变化规律，对于隔振设计具有重要的参考价值。由于提出简化的等效模型，使得隔振器阻尼系数的测试更加快捷方便，本方法可推广应用于具有更多参数的隔振器阻尼系数的测量。

关键词: 微振动隔振器, 三参数模型, 两参数隔振系统, 机械阻抗, 迟滞环

Abstract:

The determination of the damping coefficient is very important for vibration isolation design. For large damping viscous fluid micro-vibration isolators, this paper presents a new equivalence theory and method to measure the damping coefficient of a three-parameter isolation model. Based on the equality of mechanical impedance, an equivalent two-parameter physical system which can be easily tested is obtained from the three-parameter isolation model. The measured damping coefficient and stiffness coefficient from a self-designed test setup are input into an ADAMS simulation model, and then the equivalent damping coefficient of this simulation is compared with that directly received from a hysteretic loop test. The results show great consistency between simulation and measurement and thus prove the validity and feasibility of this method. The variation of dynamic damping coefficient with frequency is also obtained,which is difficult for traditional methods to obtain and will be valuable for the design of vibration isolation. Thus, it becomes convenient to conduct measurements of damping coefficients of micro-vibration isolators because of the simplified model. Furthermore, the method can also be applied to isolators with more parameters to measure damping coefficients.

Key words: micro-vibration isolator, three-parameter model, two-parameter isolation system, mechanical impedance, hysteretic loop

中图分类号:

王杰, 赵寿根, 吴大方, 罗敏. 微振动隔振器动态阻尼系数的测试方法[J]. 航空学报, 2014, 35(2): 454-460.

WANG Jie, ZHAO Shougen, WU Dafang, LUO Min. A Test Method of Dynamic Damping Coefficient of Micro-vibration Isolators[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014, 35(2): 454-460.

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微振动隔振器动态阻尼系数的测试方法

A Test Method of Dynamic Damping Coefficient of Micro-vibration Isolators

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