摘要：基于有限元实体建模方法，建立了含穿透型裂纹的失谐叶盘结构有限元模型，揭示了两个裂纹叶片的分布情况对失谐叶盘结构振动特性的影响规律。研究表明，两个裂纹叶片的分布情况对失谐叶盘结构的基频以及模态局部化程度均有较大影响，并发现当两个裂纹叶片处于相邻位置时，失谐叶盘结构的基频最小，模态局部化程度最高，且该现象在弱耦合条件下尤为突出。而离心力(转速)对含两个裂纹叶片的失谐叶盘结构振动局部化有减弱作用。

Abstract: Based on the solid modeling method, the finite element model of mistuned bladed disk with through crack was established, The effect of two cracked blades distribution on vibration characteristics of the mistuned bladed was revealed. Research results show that the distribution of two cracked blades can greatly influence the fundamental frequency of the mistuned bladed disk, as well as the degree of modal localization. When two cracked blades locate in the adjacent positions, the fundamental frequency of the mistuned bladed disk is the minimum, and the level of modal localization is the highest. Moreover, the phenomenon is particularly prominent under weak-coupling condition .While the centrifugal force (rotational speed) can weaken on vibratory localization of the mistuned bladed disk with two cracked blades .