由於複合材料具有高強度、高勁度、質量輕、低導電、低導熱及抗酸鹹腐蝕等優越特性，現今已被廣泛應用在各大先進工業工程結構中。為避免外在環境之振動對結構體產生的激振頻率與結構體本身的自然頻率相近而造成共振現象，使結構物超過容許限度產生大變形進而破壞。因此結構物自然頻率的分析乃是很重要的課題之一。
本文利用有限元軟體ABAQUS分析，在不同的軸力、轉速、幾何形狀、邊界條件、開孔大小、纖維角度等條件下，對複合疊層圓柱殼基本振動頻率所產生的影響。並利用黃金分割法搜尋出複合疊層圓柱殼最佳纖維排列角度及其對應之最高基本振動頻率。
研究成果可供業界參考，於設計受壓旋轉複合疊層圓柱殼時，可選擇適當的幾何形狀與纖維排列角度，以提高複合疊層圓柱殼最高基本振動頻率，進而降低共振發生的機率。

Because of the composites possess excellent characteristics such as high strength, high stiffness, lightweight, low thermal conductivity, low conductivity, acid and alkali resistance, they have been widely used in advanced industrial engineering structures now. To avoid structures producing resonance phenomenon and to avoid materials exceeding the allowable limits, the natural frequency analysis of composites structures becomes one of important issues.
In this study, the finite element software ABAQUS is used to obtain the fundamental frequencies of composite laminated cylindrical shells. The Golden section method is employed to find the optimal fiber orientations and its corresponding maximum fundamental frequency in the composite laminated cylindrical shells. Finally, the influence of axial compression, rotating speed, geometric shapes, boundary conditions, hole size, and fiber orientations on the maximum fundamental frequency of the composite laminated cylindrical shells are investigated.
Research results obtained in this study can be used by the industry, for the design of axially compressed rotating composite laminated cylindrical shell. As the results, suitable geometry and proper angles of laminates fiber can be selected to maximize the fundamental frequency of the composite laminated cylindrical shells and then reduce the probability of occurrence of resonance, for the composite laminated cylindrical shells.

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