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  • 學位論文

非線性元件於隔振之效應分析及驗證研究

The Experimental Verifications and Dynamic Analyses on the Softening Nonlinear Elements

指導教授 : 黎文龍

摘要


被動式隔振之減振方式廣泛應用於目前的工業界,然而一般被動式隔振器卻有頻寬固定的缺點,為了改善此一缺點,過去本實驗室之研究曾以利用現有的漸弱性非線性元件,加以改良測試,結果發現效果相當好,不過,所謂的漸弱性幾何非線性元件特性都不易有效的掌握。有鑑於此,本研究有系統地以CAD/CAE工具,分析歸納出漸弱性非線性元件組,並將此一元件實現於隔振器中,透過預壓非線性元件即可調整隔振器之自然頻率,在振動環境不變的情況下,提高隔振效果。由實驗結果可知,隨著預壓量的增加,隔振效果可逐漸提高,而預壓量10 mm 所得到的隔振效果為沒預壓時的4 倍以上,驗證了漸弱性非線性元件可將系統的自然頻率往低頻方向調整,提高隔振器的隔振效果。

並列摘要


The passive vibration isolator is an effective vibration isolation technique but inflexibility to the environments or occasions. In order to improve the deficiency, this study employed non-linear elements in the self-design vibration isolator. First all, confirming the elements had the non-linear property by FEM. The analysis result showed that it can be used to tune the natural frequency by pre-loads. After the practical experiments, all the results showed that the vibration isolation capability can advance with pre-loaded. Furthermore, the isolation capability with 10 mm pre-loaded degrees has four times better than without pre-loaded. The remarkable vibration reduction in some frequency bands has been observed.

參考文獻


9. 陳信宏,頻率可調式非線性微吸振器之研究,碩士論文,國立台北科技大學製造科技研究所,2003。
10. 蔡忠瑾,應用非線性元件模組之創新微振避振平台研發,國立台北科技大學機電整合研究所,2006。
2. Ungar, E.E., and White, R.W., “Footfall-Induced vibrations of Floors Supporting Sensitive Equipment,” Sound and Vibration, Vol. 13, No. 10, pp. 10-13, 1979.
5. Rivin, E.I., Passive Vibration Isolation, ASME Press, New York, 2001.
8. “Disc Springs Handy for Use,” Adolf Schnorr GmbH + Co. KG, 1997.

被引用紀錄


黃偉瑄(2014)。具非線性效應之線性滑軌輔助滑塊之創新研究與開發〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://doi.org/10.6841/NTUT.2014.00543
Wei, Y. Y. (2010). 應用非線性流體系統於隔振之研究 [master's thesis, National Taipei University of Technology]. Airiti Library. https://doi.org/10.6841/NTUT.2010.00288
蘇育賢(2012)。運用空氣彈簧與非線性吸振器於複合型減振平台之研發〔碩士論文,國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-1908201217251000

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