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- Title
基于 Scanlan 颤振导数理论 求解水翼临界颤振状态.
- Authors
魏子天; 洪 亮; 刘新月; 南 栩
- Abstract
Flutter is a kind of self-excited vibration with non attenuation amplitude. Flutter prediction of a hydrofoil has always been a difficulty in the field of hydroelasticity. In this paper, the Scanlan flutter derivative theory in the field of aerodynamics is introduced to identify the critical flutter state of a hydrofoil. Firstly, the flutter derivative of the hydrofoil is solved according to the theory, and the critical flutter state of the hydrofoil is obtained by combining with the critical flutter conditions.Then, the Newmark-β method is used to verify and analyze the obtained results, which are in good agreement.Finally, the vibration state of the hydrofoil is briefly analyzed. The calculation conducted in this paper proves that Scanlan flutter derivative theory can be applied to the prediction of hydrofoil critical flutter state, which provides a new idea for the study of hydrofoil flutter.
- Subjects
HYDROELASTICITY; HYDROFOILS; AERODYNAMICS; SELF-induced vibration
- Publication
Journal of Ordnance Equipment Engineering, 2023, Vol 44, Issue 3, p158
- ISSN
2096-2304
- Publication type
Article
- DOI
10.11809/bqzbgcxb2023.03.023