考虑刚体运动与弹性运动耦合影响的旋转叶片振动有限元分析

本文研究了旋转叶片的纵向振动和双向横振动，考虑了刚体运动和弹性振动的耦合关系，利用有限元法推导出离散系统动力学方程，从而引出陀螺特征值问题。本文就某一特例了计算了在不同转速时叶片振动的自然频率，讨论了转速对振动频率的影响。

Finite element method analysis of rotating blade with consideration of the coupling of rigid body motion and elastic motion

HT5SS]:This paper investigates the axial\|flexural vibrations of the rotating blade with the consideration of the coupling of rigid body motion and elastic motion. By means of finite element method, the paper derives the dynamic equations of discrete system and leads to gyroscopic characteristic value problem. The paper computes the natural frequencies of a certain rotating channel beam with different rotating speed, and discusses the influence of rotating speed on natural frequencies.