Institutional Repository
| Effects of multistage coupling and disk flexibility on mistuned bladed disk dynamics | |
| BLADH R.; CASTANIER M. P.; PIERRE C. | |
| 2003 | |
| Source | Journal of engineering for gas turbines and power
 |
| Volume | 125Issue:1Pages:121-130 |
| English Abstract | The effects ofdisk flexibility and multistage coupling on the dynamics of bladed disks with and without blade mistuning are investigated. Both free and forced responses are examined using finite element representations of example single and two-stage rotor models. The reported work demonstrates the importance of proper treatment of interstage (stage-to-stage) boundaries in order to yield adequate capture of disk-blade modal interaction in eigenfrequency veering regions. The modified disk-blade modal interactions resulting from interstage-coupling-induced changes in disk flexibility are found to have a significant impact on (a) tuned responses due to excitations passing through eigenfrequency veering regions, and (b) a design's sensitivity to blade mistuning. Hence, the findings in this paper suggest that multistage analyses may be required when excitations are expected to fall in or near eigenfrequency veering regions or when the sensitivity to blade mistuning is to be accounted for Conversely, the observed sensitivity to disk flexibility also indicates that the severity of unfavorable structural interblade coupling may be reduced significantly by redesigning the disk(s) and stage-to-stage connectivity. The relatively drastic effects of such modifications illustrated in this work indicate that the design modifications required to alleviate veering-related response problems may be less comprehensive than what might have been expected. |
| Indexed Type | 其他 |
| Cooperation Status | 其它 |
| Keyword | Sensitivity Analysis Finite Element Method Numerical Method Modeling Defect Rotating Disk Multistage Multistage Apparatus Turbine Blade Gas Turbine Mode Coupling Natural Frequency Forced Vibration |
| Language | 英语 |
| Content Type | 期刊论文 |
| URI | http://ir.iscas.ac.cn/handle/311060/1338 |
| Collection | 中国科学院软件研究所 |
| Recommended Citation GB/T 7714 | BLADH R.,CASTANIER M. P.,PIERRE C.. Effects of multistage coupling and disk flexibility on mistuned bladed disk dynamics[J]. Journal of engineering for gas turbines and power,2003,125(1):121-130. |
| APA | BLADH R.,CASTANIER M. P.,&PIERRE C..(2003).Effects of multistage coupling and disk flexibility on mistuned bladed disk dynamics.Journal of engineering for gas turbines and power,125(1),121-130. |
| MLA | BLADH R.,et al."Effects of multistage coupling and disk flexibility on mistuned bladed disk dynamics".Journal of engineering for gas turbines and power 125.1(2003):121-130. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| +BJ01152124.pdf（272KB） | 开放获取 | License | Application Full Text | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment