電腦輔助懸臂預扭平行六面體之三維振動分析

Computer-Aided Analysis on 3D Vibrations of Pretwisted Cantilevered Parallelepipeds

10.29987/CCUHKJE.200606.0005

陳為仁(W.-R. Chen)

參數式實體 ； 限元素分析 ； 預扭平行六面體 ； 共振頻率 ； 振動形態 ； parametric solid ； finite element analysis ； twisted parallelepipeds ； natural frequencies ； vibration modes

華岡工程學報

20期（2006 / 06 / 01）

39 - 47

繁體中文

本文結合三維參數式實體幾何模型及有限元素分析法，以探討懸臂預扭平行六面體之三維自由振動分析。INVENTOR CAD軟體被用以建構預扭平行六面體的參數式實體模型，再匯入MSC.FEA軟體進行有限元素模型建立及模態分析。此一分析技術可提供研究者一快速且有效的設計分析工具，用以從三維的角度評析不同幾何參數及扭角對預扭葉片之共振頻率與振動形態的影響效應。

In the present study, a method integrating the parametric solid modeling and finite element analysis was used to investigate the three dimensional vibrations of cantilevered twisted parallelepipeds. Inventor CAD software was utilized for modeling the parametric solid of the twisted parallelepiped, which then was imported into MSC.FEA finite element software and used for finite element modeling and modal analysis. Such an analytical technique will facilitate researchers an effective and efficient tool to evaluate the influence of geometric parameters and twist angle on the natural frequencies and vibration modes of twisted blades from the three dimensional approach.