本文使用有限元素法對具有籠型支撐座之擠壓油膜軸承應用於齒輪轉子軸承系統的動態行為進行分析。系統的轉軸以Timoshenko樑模型建模，並考慮了轉軸的旋轉慣性和剪應變效應。軸承部分則使用具籠型支撐座的擠壓油膜軸承進行模擬。轉盤被假設為剛體，並考慮了其陀螺效應。齒輪對則被視為由線性彈簧和阻尼器連接的兩個剛性轉盤來模擬。本研究探討了軸承潤滑油黏度、軸承徑向間隙、軸承長度、軸承直徑和籠型支撐座對系統自然頻率和穩態響應的影響。數值結果顯示，隨著潤滑油黏度的增加，系統的穩態響應下降。隨著軸承長度或軸承直徑的增加，軸承勁度和阻尼係數也會增加，進而使系統的穩態響應下降。增加籠型支撐座的勁度係數會提高系統的臨界轉速，同時降低系統的共振穩態響應。

In this thesis, dynamic behavior of a geared rotor-bearing system with squeeze film bearing and squirrel cage supported structure is analyzed by the finite element method Rotating shafts of the system are modeled as Timoshenko beam, which includes the effects of rotary inertia and shear deformation. Bearings are modeled as squeeze film bearing and squirrel cage supported structure. Disk is considered to be rigid with its mass eccentricity and gyroscopic effect taken into account. The gear mesh is modeled as a pair of rigid disks connected by a spring-damper set along the pressure line. In this thesis, we discuss effects of parameters such as viscosity of bearing lubricant, radial clearance of bearing, bearing length, bearing diameter, and squirrel cage supported structure on natural frequency and steady-state response of the system. Numerical results of this research show that, as the lubricant viscosity increases, the steady-state response of the system decreases. With the increase in bearing length or bearing diameter, the bearing stiffness and damping coefficient also increase, leading to a reduction in the system's steady-state response. Increasing the stiffness coefficient of the squirrel cage support will raise the critical speed of the system and simultaneously reduce the resonance steady-state response.

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