本論文主要研究一彈性支撐之旋轉樑受移動負荷之動態響應。假設旋轉樑為Timoshenko樑，且受一移動力沿軸向作用。本研究利用有限元素法建立模型，利用拉格朗至法(Lagrangian approach)以求得運動方程式，利用朗吉–庫塔法(Runge-Kutta method)求解旋轉樑系統動態響應，並探討支承勁度係數、移動負荷速度與轉軸轉速對系統動態響應的影響。由數值結果得知系統振動與移動負荷速度有很大的關聯，當移動負荷的移動速度越慢則振動也越小。

In this thesis studies the dynamic response of an Elastically Supported Spinning Beam Subjected to a Moving Load. Firstly, this study simulates the Timoshenko beam, subject is under a moving force along the axial, this study uses the finite element method to construct the model, then uses the Lagrangian approach to derive the equations of motion, using the Runge-Kutta method to solve the dynamic response of the spinning system, and then we discuss stiffness coefficient, the speed of moving load, shaft whirl speed that may affect the system dynamic response. According to the numerical results system vibration and the moving load speed have great relevance, when the speed of the moving load is reduced, the smaller the vibration is.

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