噪声与振动控制2019，Vol.39Issue(1)：224-229,6.DOI:10.3969/j.issn.1006-1355.2019.01.043
复杂机械隔振系统阻抗与传递损失关联性研究
Research on Correlation between Transmission Loss and Impedance of Complex Mechanical Isolation Systems
吴武辉 1向阳 2罗文 2张领 1万汉群1
作者信息
- 1. 中国舰船研究设计中心 船舶振动噪声国家重点实验室 中国船舶工业噪声检测中心, 武汉 430064
- 2. 武汉理工大学 能源与动力工程学院, 武汉 430063
- 折叠
摘要
Abstract
The complex mechanical system consists of elastic elements and rigid components. In the steady operation state of the complex mechanical systems, the multi-system impedance of elastic elements and rigid elements is the main factor that affects the system vibration isolation and transmission loss. In this article, a double-channel mathematical model for analyzing the impedance of the system is established. The double-layer vibration isolation mechanical test system is developed. The B&K 3660D type multi-channel measurement collection system and the B&K 8203 type excitation hammer are used. The hammering excitation method is used to measure the impedance, and the initial impedance of the complex mechanical system is obtained. Then, by adjusting the structural strength of the mechanical system base and the supporting stiffness of the piping system, the relationship among the impedance of the double-channel system, the vibration isolation effect of the mechanical system and the transmission loss of the pipeline system are studied quantitatively. The experimental results show that: (1) Appropriate increase of the system impedance of the base is beneficial to the vibration isolation effect of the vibration isolation device. If the vibration isolation effect of vibration isolation system fails to meet the design requirement, the appropriate increase of the impedance of test base is an effective solution to satisfy the vibration isolation requirement. (2) Changing the properties and installation layout of the flexible components of the piping system can effectively increase the impedance of the pipeline system, raise the vibration energy transmission loss of the flexible piping system, and reduce the base level of vibration of the isolation system effectively.关键词
振动与波/双层隔振系统/关联性/传递损失/阻抗Key words
vibration and wave/double-layer vibration isolation system/correlation characteristic/transmission loss/impedance分类
数理科学引用本文复制引用
吴武辉,向阳,罗文,张领,万汉群..复杂机械隔振系统阻抗与传递损失关联性研究[J].噪声与振动控制,2019,39(1):224-229,6.
