橡膠材質對防振墊降噪效果之實驗與分析

Measurement and Analysis on the Noise Attenuation Effect of Resilient Mount with Different Rubber Materials

王偉輝(Wei-Hui Wang) ； 陳炳旭(Ping-Hsu Chen) ； 楊登傑(Teng-Chieh Yang)

《中華民國振動與噪音工程學會論文集》 1998 (1998/05) Pp. 267-271

https://doi.org/10.30028/CSSVANNUAL.199805.0267

摘要

橡膠為防振墊中所使用之不可或缺的黏彈性材料，因其具有很高的阻尼比及損失係數，對機械振源之減振降噪有很好之功效。然橡膠之種類很多，要確實掌握不同橡膠對寬頻域振動之傳遞阻抗性質，作為彈性墊設計之重要參數，乃進行本研究。本研究即針對國產之丁基橡膠（試片A.B），有機樹脂（試片C,D）、丁二烯苯乙烯橡膠（試片E）及新平橡膠（試片F）等，將其分別置於同型之彈性墊中。進行對振源傳遞動性變化之實驗量測與分析比對。結果顯示丁基橡膠、有機樹脂及新平橡膠均是不錯的減振材料，在800Hz以上之頻域均有降噪20dB~30dB之功效。

並列摘要

The rubber is a viscoelastic material and is used inevitably in a resilient mount Owing to the high damping ratio and loss factor, the rubber has a very good performance for reducing vibration and attenuating structure-borne noise from a mechanical vibrating source. The transfer impedances of different kinds of rubber have been studied in this paper, so as to catch the important parameters for the design of a resilient mount. The rubber specimens produced domestically, such as butyl. silicone, styrene butadience rubber (SBR) and neoprence, are individually put into the same type of resilient mount, then the transfer mobilities are compared experimentally and analytically for the same vibrating source. The results reveal that all the four kinds of rubber have an effectiveness to attenuate structure-borne noise level 20~30 dB in the frequency range of 800Hz~3.2kHz.