| 研究生: |
王國龍 Wang, Kou-Long |
|---|---|
| 論文名稱: |
旋轉複合疊層圓柱殼基本振頻對纖維角度之最佳化分析 Maximization of the Fundamental Frequencies of Spinning Composite Cylindrical Shells with Respect to Fiber Orientation |
| 指導教授: |
胡宣德
none |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 土木工程學系 Department of Civil Engineering |
| 論文出版年: | 2004 |
| 畢業學年度: | 92 |
| 語文別: | 中文 |
| 論文頁數: | 113 |
| 中文關鍵詞: | 基本振頻 、圓柱殼 、最佳化分析 |
| 外文關鍵詞: | Cylindrical Shells, Fundamental Frequency |
| 相關次數: | 點閱:64 下載:1 |
| 分享至: |
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由 於 複 合 材 料 具 備 材 質 輕、 高 勁 度、 低 導 熱 等 優 越 的 特 性, 已 被 廣 泛 應 用 於 先 進 工 業 工 程 結 構 上。 為 避 免 結 構 物 產 生 共 振 現 象 , 使 材 料 超 過 容 許 變 位 而 破 壞 , 因 此 結 構 物 振 動 頻 率 的 分 析 乃 成 為 結 構 設 計 上 之 準 則 之 一 。
本 文 利 用 有 限 元 軟 體 ABAQUS 來 分 析 複 合 疊 層 圓 柱 殼 (軸) 之 基 本 振 動 頻 率 受 邊 界 條 件 、 纖 維 角 度 、 疊 層 數 目 及 等 速 旋 轉 後 所 造 成 的 影 響 , 並 應 用 黃 金 分 割 法 來 求 出 複 合 疊 層 圓 柱 殼 (軸) 中 , 最 佳 纖 維 之 排 列 角 度 及 其 對 應 之 最 高 基 本 振 動 頻 率 。
分 析 結 果 顯 示 , 在 各 種 不 同 的 情 況 下 , 疊 層 圓 柱 殼 (軸) 基 本 振 頻 隨 厚 度 的 增 加 而 上 升, 在 大 部 分 的 情 形 下 基 本 振 動 頻 率 隨 轉 速 的 增 加 而 上 升 (例 外 部 分 在 文 中 有 特 別 說 明 之 ), 若 選 擇 適 當 的 纖 維 角 度 與 堆 疊 方 式,則 可 提 高 疊 層 圓 柱 殼 (軸) 之 基 本 振 頻 。
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