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研究生: 楊愷盈
Yeo, Kai-Ying
論文名稱: 孔口補償式液靜壓軸頸軸承的靜態與動態特性
The Static and Dynamic Characteristic of Orifice-compensated Hydrostatic Journal Bearing
指導教授: 林士傑
Lin, Shih-Chieh
口試委員: 宋震國
Sung, Cheng-Kuo
賴泰華
Lai, Ta-Hua
學位類別: 碩士
Master
系所名稱: 工學院 - 動力機械工程學系
Department of Power Mechanical Engineering
論文出版年: 2021
畢業學年度: 109
語文別: 中文
論文頁數: 73
中文關鍵詞: 液靜壓軸頸軸承靜態性能動態性能
外文關鍵詞: Hydrostatic journal bearing, static performance, dynamic performance
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  • 本研究之目的在於分析液靜壓軸頸軸承的靜態與動態性能之表現。於軸承靜態性能表現中,利用有限差分法模擬軸承流膜的壓力分佈,並透過壓力分佈,預估軸承的承載力、剛性及流量。模擬分析後,本研究透過靜態負載測試,驗證模擬之可行性。
    於動態性能中,為透過實驗測試的方式,了解軸承之自然頻率及其動剛性表現。本研究所使用的動態性能測試方式為使用衝擊鎚對軸承系統施加脈衝力,並透過軸承於各頻率下的位移響應及所施加之脈衝力,分析軸承於各頻率下的剛性及阻尼表現。


    The purpose of this research is to analyze the static and dynamic characteristic of hydrostatic journal bearings. In the static performance of the bearing, the finite difference method is used to simulate the fluid film pressure distribution of the bearing, and through the pressure distribution, the bearing load capacity, static stiffness and flow rate of the bearing are estimated. After the simulation analysis, this study verified the feasibility of the simulation through experiment.
    In the dynamic performance, to understand the natural frequency of the bearing and its dynamic rigidity performance through experimental testing. The dynamic performance test method used in this research is using an impact hammer to apply impulse force to the bearing system and analyze the stiffness and damping performance of the bearing at each frequency through the displacement response of the bearing at each frequency and the applied impulse force.

    摘要 I ABSTRACT II 誌謝 III 目錄 IV 圖目錄 VII 表目錄 X 第一章 序論 1 第二章 文獻回顧 6 2.1 液靜壓軸承工作原理 6 2.2 液靜壓軸承壓力調節機制 7 2.3 液靜壓軸承數學模型 9 2.4 軸承流膜動態係數分析方法 11 2.5 軸承剛性及阻尼係數的計算 14 2.6 軸承測試系統 16 第三章 研究流程與方法 19 3.1 研究流程 19 3.2 軸承基礎理論 20 3.2.1 雷諾方程式 22 3.2.2 有限差分法建立 23 3.2.3 邊界條件與求解 25 3.3 孔口節流器設計方法 28 3.4 程式計算流程 29 3.5 軸承流膜剛性及阻尼係數概念 30 3.6 軸承系統運動模型 32 3.7 軸承運動數學模型 33 3.8 軸承動態剛性計算 34 3.9 剛性與阻尼係數的測定規劃 35 第四章 軸頸軸承靜態性能測試 37 4.1 液壓油性能測試 37 4.2 孔口節流器流阻測試 39 4.3 軸頸軸承靜態負載測試系統架設 40 4.4 液靜壓設計尺寸參數與運行條件 46 4.5 靜態負載測試結果 48 第五章 軸頸軸承動態測試 51 5.1 實驗架設及設備 51 5.2 衝擊測試方法與步驟 54 5.3 衝擊測試結果與討論 56 5.4 剛性及阻尼於不同供壓下之表現 58 第六章 結論與未來展望 61 6.1 研究成果 61 6.2 未來展望 62 附錄 64 附錄A 納維-斯托克方程組 64 附錄B 量測設備規格 68 參考文獻 70

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