Random mistuning을 고려한 회전하는 멀티 패킷 블레이드 시스템의 진동 국부화Vibration localization of a rotating multi-packet blade system considering random mistuning
- Other Titles
- Vibration localization of a rotating multi-packet blade system considering random mistuning
- Authors
- 권승민; 유홍희
- Issue Date
- Nov-2012
- Publisher
- 대한기계학회
- Keywords
- Vibration localization(진동 국부화); multi-packet blade system(다중 패킷 블레이드 계)
- Citation
- 대한기계학회 2012년도 추계학술대회 논문집, no. , pp.224 - 225
- Indexed
- OTHER
- Journal Title
- 대한기계학회 2012년도 추계학술대회 논문집
- Start Page
- 224
- End Page
- 225
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/164118
- Abstract
- Vibration localization of mistuned multi-packet blade system undergoing multiple nozzle excitation forces was investigated. The equations of motion of rotating multi-packet blade system undergoing multiple nozzle excitation forces are derived using Kane’s method. Since the blades are grouped in the packets by shroud, the vibration energy is often confined to the packet or packets in mistuned multi-packet blade systems. In order to investigate the effect of mode localization on dynamic responses of mistuned multi-packet blade system, not only modal but also transient analyses are carried out using the equations of motion. The results of modal and transient analyses herein reveal that there are dominant and trivial modes for dynamic responses depending on the number of nozzles and operating speed. To design the mistuned multi-packet blade system, length of blades are randomly mistuned.
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