发表机构
Duke University; RMIT University（杜克大学; 皇家墨尔本理工大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文通过相位约化方法分析跨声速抖振，结合气动功导出等效阻尼与刚度的闭式解，统一描述相位锁定与滑移，揭示振荡流中气动弹性失稳的新机理。
AI 中文摘要
本文发展了一种跨声速抖振的相位约化描述，将抖振视为一个稳定的自主流体极限环，该极限环受到谐波结构运动的弱扰动。当与气动功相结合时，相位约化模型为等效气动阻尼和刚度提供了闭式表达式，并统一描述了流固系统的相位锁定、相位滑移和气动弹性稳定性。所得分析为振荡流中气动弹性失稳的机理提供了新的见解，包括气动阻尼图、零失谐时的奇异行为以及大范围的亚临界气动弹性失稳区域。
英文摘要
This paper develops a phase-reduced description of transonic buffet, treating buffet as a stable autonomous fluid limit cycle that is weakly perturbed by harmonic structural motion. When combined with aerodynamic work, the phase reduction model yields closed-form expressions for the equivalent aerodynamic damping and stiffness, together with a unified description of phase locking, phase slipping and aeroelastic stability of the fluid-structural system. The resulting analysis provides new insight into the mechanisms governing aeroelastic instability in oscillatory flows, including aerodynamic damping maps, singular behaviour at zero detuning, and broad regions of subcritical aeroelastic instability.
