本研究以有限元素法(Finite Element Method)模擬圓錐滾子軸承應用於斜齒輪轉子系統之動態行為。系統轉軸模擬為Timoshenko樑，即考慮轉軸的剪力變形效應及旋轉慣性；轉盤假設為剛體，並考慮其質量偏心與陀螺效應；軸承以圓錐滾子軸承來模擬；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。本文探討圓錐滾子軸承之軸承參數對系統側向及軸向響應之影響。從數值結果得知，隨著軸承上的滾子數量增加，系統的臨界轉速會隨之上升，而穩態響應則隨之下降。當滾子接觸角度增大時，系統的側向響應隨之上升，同時軸向響應隨之下降，臨界轉速則隨接觸角度上升而下降。若滾子的徑向間隙增大，系統臨界轉速隨之降低，共振響應則會隨之上升。

In this thesis, dynamic analysis of a helical geared rotor system with tapered roller bearing is studied by using the finite element method. Rotating shafts are modeled as Timoshenko beam, which includes the effect of shear deformation and rotary inertia. Bearings are modeled as Tapered roller bearing. 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, we investigate effects of bearing parameters such as different number of rollers, roller contact angle, and roller radial clearance on lateral response and axial response of the system. Numerical results show that as the number of rollers increases, the critical speed increases, while the response reduces. When the roller contact angle increases, the lateral response increases, while the axial response reduces, and critical speed decreases. If the radial clearance increases, the critical speed decreases, and the resonance response increases.

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