探讨了旋转叶片动力刚化效应产生的原因，并分析其对叶片固有频率的影响。
The stiffening reasons of the rotating blade and the influence of the dynamic stiffening effect on the blade natural frequencies are discussed.
结果表明，自由悬挂系统具有两大动力特征：悬挂物体的质量具有使吊索刚化效应；
Thc calculatoin results show that the free hanging systems possess two important dynamic characteristics. The fall line is rigidified by its hanging mass;
应用多体动力学方法，分析了旋转叶片动力刚化效应产生的原因及其对叶片振动模态的影响；
The stiffening effects of the rotating blade are discussed, using the multi-body dynamics method. The influence of the dynamic stiffening effect on the blade vibration mode is then analyzed.
以单连杆弹性臂动力学模型为基础讨论转速对频率、振幅的影响，得出了动力刚化的机理，并对其是否考虑动力刚化效应时进行了数值仿真比较与分析。
The dynamic rigidity mechanism is obtained by discussing the effect of rotational speed of single connecting rod elastic arm on frequency and amplitude on the basis of dynamic model.
以单连杆弹性臂动力学模型为基础讨论转速对频率、振幅的影响，得出了动力刚化的机理，并对其是否考虑动力刚化效应时进行了数值仿真比较与分析。
The dynamic rigidity mechanism is obtained by discussing the effect of rotational speed of single connecting rod elastic arm on frequency and amplitude on the basis of dynamic model.
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