The effect of cracked blades distribution on vibration characteristics of the mistuned bladed disk
Wang Ai Lun1,2 ; Huang Fei1,2
1.Key Laboratory of Modern Complex Equipment Design and Extreme Manufacturing (Central South University), Changsha 410083, China 2. College of Mechanical and Electrical Engineering, Changsha 410083, China
Abstract：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 .
王艾伦; 黄飞; . 裂纹叶片分布对失谐叶盘结构振动特性的影响*[J]. , 2011, 30(4): 26-28,9.
Wang Ai Lun;; Huang Fei;. The effect of cracked blades distribution on vibration characteristics of the mistuned bladed disk. , 2011, 30(4): 26-28,9.
2011, Vol. 30 
