本文研究了自带冠叶片冠间接触碰撞的动力学特性及减振机理。利用弹性力学理论对叶片冠间接触碰撞问题建立碰撞弹性力模型，叶片的冠间接触碰撞进行了数值模拟，并通过实验验证了理论分析的结果，进而得到了叶片接触碰撞系统的非线性响应特

The dynamic characteristics and damping mechanism of impact-contact between the tips of blades was studied in this paper. The model of impact elastic forces for the impact-contact between the tips of blades was established by employing the elastic mechanics theory. Then the impact-contact of blades was simulated by numerical method and verified by the experimental results. Finally the nonlinear response characteristics and damping mechanism of impact-contact system were obtained.