Vibration localization of a mistuned rotating multi-packet blade system undergoing external cyclic harmonic force
- Authors
- Kwon, Seung Min; Yoo, Hong Hee
- Issue Date
- Nov-2011
- Publisher
- KOREAN SOC MECHANICAL ENGINEERS
- Keywords
- Forced vibration response; Multi-packet blade system; Random mistuning; Transient analysis; Vibration localization
- Citation
- JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, v.25, no.11, pp.2769 - 2774
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
- Volume
- 25
- Number
- 11
- Start Page
- 2769
- End Page
- 2774
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/167235
- DOI
- 10.1007/s12206-011-0813-1
- ISSN
- 1738-494X
- Abstract
- A multi-packet blade system consists of several blades which are attached to a disk and connected through shrouds. The blades of a multi-packet blade system are usually assumed to be identical. However, there always exists small, random mistiming among the blades due to manufacturing tolerance, in-operation wear and environmental changes. Such mistuning may cause significant increase in the forced vibration responses of some blades in the multi-packet blade system. Critical fatigue problems often occur in mistuned systems since the forced vibration response of a mistuned system is often significantly larger than that of a tuned system. Therefore, it is very important to predict the maximum blade response. In this study, blades are idealized as cantilever beams and the flexibilities of the disk and shrouds are idealized as discrete springs. Equations of motion are derived using the hybrid deformation variable method. To realize vibration localization with random mistuning, transient analysis is carried out for a multi-packet blade system excited by multiple nozzle jet forces.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 기계공학부 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/167235)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.