Experimental Investigation on Natural Characteristics and Forced Response of Bladed Disks
(0) The results of an experimental investigations on the natural characteristics of tuned bladed disk and forced dynamic responses of mistuned bladed disks are reported. Three experimental bladed disks are discussed: a tuned specimen of periodic symmetry with 12-blades which are nominally identical, and two mistuned specimens, which feature small blade-toblade variations by adding slight blocks to blade tips. All the specimens are subject to travelling wave excitation produced by piezo-electric actuators sticking on the root of blades. The primary objective of this experiment is to observe the natural characteristics of tuned bladed disk, and to research the impact of mistuning on the forced response blade amplitude magnification. Analytical predictions about the blade amplitude magnification factor are verified by the experimental results.
Bladed disk Frequency veering Mode shape exchange Forced response
Zhibin Zhao Erming He Hongjian Wang
College of Aeronautics, Northwestern Polytechnical University, Xian, China, 710072
国际会议
上海
英文
34-37
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）