不同結構的預扭平行六面體之三維振動分析

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Title:	不同結構的預扭平行六面體之三維振動分析
Other Titles:	Three Dimensional Vibrations of Pretwisted Parallelepipeds with Various Configurations
Authors:	陳為仁林智堅杜冠賢
Contributors:	工學院
Keywords:	參數式實體限元素分析預扭平行六面體共振頻率振動模態 parametric solid finite element analysis twisted parallelepipeds natural frequencies vibration modes
Date:	2009-06-01
Issue Date:	2012-03-21 14:55:17 (UTC+8)
Abstract:	本文利用整合參數式實體建模及有限元素分析之方法，以從三維的角度探討並分析不同長／寬比、寬／厚比及扭角對預扭平行六面體的共振頻率與振動模態的影響效應。分析結果顯示長／寬比與寬／厚比顯著地影響振動模態出現的順序及可能性，而扭角僅影響振動模態出現的順序。就不同幾何構造的預扭平行六面體而言，共振頻率受扭角影響最顯著的模態係不同的，且該頻率可能會隨扭角增大而遞增或遞減。 An analytical method integrating the parametric solid modeling and finite element analysis is employed to study the three dimensional vibrations of cantilevered twisted parallelepipeds with various configurations. The effects of different geometric parameters on the natural frequencies and vibration modes have been investigated and discussed. The results show that the length/depth and depth/thickness ratio affect significantly the order and possibility of vibration modes to appear, but the twisted angle merely influences the order. The natural frequency of each vibration mode is affected differently by the increasing twisted angle for twisted parallelepipeds with different length/depth and depth/thickness ratio.
Relation:	華岡工程學報； 24期 (2009 / 06 / 01) ， P123 - 131
Appears in Collections:	[College of Engineering] Chinese Culture University Hwa Kang Journal of Engineering

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