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所属单位：航空学院
发表刊物：JOURNAL OF SOUND AND VIBRATION
关键字：Morphing wing Flutter suppression Axially moving plate Slowly varying system Stability
摘要：A morphing wing can enhance aerodynamic characteristics and control authority as an alternative to using ailerons. To use morphing technology for flutter suppression, the dynamical behavior and stability of a variable-span wing subjected to the supersonic aerodynamic loads are investigated numerically in this paper. An axially moving cantilever plate is employed to model the variable-span wing, in which the governing equations of motion are established via the Kane method and piston theory. A morphing strategy based on axially moving rates is proposed to suppress the flutter that occurs beyond the critical span length, and the flutter stability is verified by Floquet theory. Furthermore, the transient stability during the morphing motion is analyzed and the upper bound of the morphing rate is obtained. The simulation results indicate that the proposed morphing law, which is varying periodically with a proper amplitude, could accomplish the flutter suppression. Further, the upper bound of the morphing speed decreases rapidly once the span length is close to its critical span length. (C) 2017 Elsevier Ltd. All rights reserved.
ISSN号：0022-460X
是否译文：否
发表时间：2018-01-06
合写作者：Li, Wencheng
通讯作者：金栋平