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 系統識別號 U0026-0908201817073100 論文名稱(中文) 油膜軸承應用於人字齒輪轉子系統之動態分析 論文名稱(英文) Dynamic Analysis of a Double-Helical Geared Rotor System with Oil-Film Bearing 校院名稱 成功大學 系所名稱(中) 航空太空工程學系 系所名稱(英) Department of Aeronautics & Astronautics 學年度 106 學期 2 出版年 107 研究生(中文) 楊宗憲 研究生(英文) Tsung-Hsien Yang 學號 P46051204 學位類別 碩士 語文別 中文 論文頁數 74頁 口試委員 指導教授-崔兆棠口試委員-江達雲口試委員-周玉端口試委員-陳膺中 中文關鍵字 油膜軸承  人字齒輪  有限元素法 英文關鍵字 Oil-film bearing  Double-helical gear  Finite element method 學科別分類 中文摘要 本文以有限元素法 (Finite Element Method)模擬油膜軸承應用於人字齒輪轉子系統之動態行為。本文系統的轉軸為Timoshenko樑，使用Timoshenko樑需要考慮剪應力及轉動慣性；轉盤假設為剛體，並考慮其陀螺效應及質量偏心；軸承以油膜軸承來模擬，在不同的轉速下會有不同的勁度係數與阻尼係數；齒輪對視為線性彈簧及阻尼器沿著壓力線連接的兩個剛性轉盤來模擬。本文探討不同參數對於油膜軸承應用於人字齒輪轉子系統之差異。本文改變齒輪螺旋角度、齒輪嚙合勁度係數及齒輪置放於不同的節點，並探討對系統自然頻率、側向及軸向響應的影響。從結果得知，改變齒輪上的變數對系統之側向-扭轉耦合模態影響較大。 英文摘要 In this thesis, dynamic behavior of a double-helical geared rotor system with oil-film bearing is studied by using the finite element method. Rotating shafts are modeled as Timoshenko beam, which includes shear deformation and the effect of rotary inertia. Bearings are modeled as oil-film bearings whose stiffness and damping coefficients vary as the rotating speed changes. Disks are assumed to be rigid, and their gyroscopic effect is taken into account. The gear mesh is modeled as a pair of rigid disks connected with spring-damped set along the pressure line. In this thesis, effects of parameters, such as helical angle, gear mesh stiffness, and different location of gears on natural frequency, lateral response, and axial response of the system are studied. Numerical results show that the resonant response in axial direction of the double-helical geared rotor system with oil-film bearing is small. By calculating the response of different nodes, it can be found that the node is closer to the middle of the rotating shaft, the lateral response is greater, otherwise, the node is closer to the bearing position, the lateral response is smaller. As the stiffness of gear mesh increases, the resonance frequencies of the system increase on the lateral-torsional coupling modes of the system. 論文目次 摘要 ii 誌謝 vi 表目錄 ix 圖目錄 x 符號說明 xi 第一章 緒論 1 1-1前言 1 1-2文獻回顧 2 1-3研究動機與目的 6 1-4本文研究 7 第二章 系統運動方程式推導 9 2-1座標系統 9 2-2系統各單元之運動方程式 10 2-2-1轉軸 10 2-2-2轉盤 12 2-2-3軸承 14 2-2-4人字齒輪 17 2-2-5系統運動方程式 19 2-3動態特性分析 20 2-3-1自然頻率分析 20 2-3-2穩態響應分析 21 第三章 數值結果與分析討論 23 3-1程式驗證 23 3-2收斂性分析與自然頻率 24 3-3系統之模態分析及旋振速率圖 24 3-4螺旋角度之影響 25 3-5齒輪嚙合勁度係數之影響 25 3-6齒輪置於系統不同位置之不同節點分析 25 3-7不同齒輪位置對系統之影響 26 第四章 結論 27 參考文獻 28 附錄一 32 附錄二 33 附錄三 40 參考文獻 [1] Ruhl R. L., and Booker J. F., “A Finite Element Model for Distributed Parameter Turborotor System,” ASME, Journal of Engineering for Industry, Vol. 94, pp. 126-132, 1972. 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[25] 黃忠立, 轉子-軸承系統在多臨界轉速限制下之輕量化設計, 國立成功大學航空太空工程研究所碩士論文, 1987. [26] 阮競揚, 含橫向裂縫的轉子軸承系統之動態特性分析, 國立成功大學航空太空工程研究所碩士論文, 1997. 論文全文使用權限 同意授權校內瀏覽/列印電子全文服務，於2023-07-01起公開。同意授權校外瀏覽/列印電子全文服務，於2023-07-01起公開。

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