噪声与振动控制2011，Vol.31Issue(3)：15-18,4.DOI:10.3969/j.issn.1006-1355-2011.03.004
动圈-橡胶结构振动特性的实验研究
Experimental Research on the Vibration Characteristics of Moving Coil - rubber Structure
许伟 1曾新吾 2孙海洋 2龚昌超2
作者信息
- 1. 国防科技大学理学院,长沙410073
- 2. 国防科技大学光电科学与工程学院,长沙410073
- 折叠
摘要
Abstract
A measurement system for vibration displacement of the moving coil-rubber structure was set up using eddy current sensors technique.The vibration characteristics of system using rubber with Shore A hardness of 40 and 50 (40°and 50°) were studied respectively.The results show that the moving coil-rubber system can be considered as a single-degree-of- freedom system.For small distortion, the main resonance frequency rising gradient decreases with the pre-compression increasing.The effective band width of the system with 50° rubber is wider than that with 40° rubber.It is also found that the rubber's equivalent stiffness decreases with the increasing of the exciting signal.Under the condition of small initial distortion, distortion of the displacement wave can be reduced by increasing the rubber' s pre-compression.关键词
振动与波/调制气流声源/动圈/橡胶/实验Key words
vibration and wave/ air-modulated sound source/ moving coil/ rubber/ experiment分类
通用工业技术引用本文复制引用
许伟,曾新吾,孙海洋,龚昌超..动圈-橡胶结构振动特性的实验研究[J].噪声与振动控制,2011,31(3):15-18,4.
