The invention discloses a rudder buzzing suppressor based on a fluid-solid coupling effect, and belongs to the field of buzzing suppressors. The rudder buzzing suppressor comprises a base, a manganesesteel sheet, a viscoelastic damping strip and a mass block, the base is of an I-shaped beam structure, and cross beams at the two ends of the base are fixed to the inner wall face of rudder skin through bolts. The manganese steel sheet is of a rectangular structure, one end of the long edge is vertically fixed on the supporting beam of the base through a connecting piece, and a mass block is fixed at the other end; and the viscoelastic damping strips are adhered to the upper surface and the lower surface of the manganese steel sheet. When the rudder is buzzed, the manganese steel sheet is repeatedly bent and deformed, the mass block at the free end does up-and-down reciprocating sinking and floating motion, the fluid-solid coupling effect is utilized, when the frequency of external carrier aerodynamic force is coupled with the frequency of the suppressor, the stability boundary of the rudder is changed, and the buzzing frequency range is narrowed. The viscous-elastic damping strip dissipates a part of mechanical energy consumption of vibration through repeated stretching and contracting movement, the vibration amplitude during buzzing is reduced, and the fatigue life of the structure is effectively prolonged.

    本发明一种基于流固耦合效应的方向舵嗡鸣抑制器,属于嗡鸣抑制器领域;包括底座、锰钢片、粘弹性阻尼条和质量块;所述底座为工字梁结构,其两端横梁通过螺栓固定于方向舵蒙皮内壁面;锰钢片为矩形结构,其长边的一端通过连接件垂直固定于底座的支撑梁上,另一端固定有质量块;所述粘弹性阻尼条粘贴于锰钢片的上、下表面。当方向舵发生嗡鸣时,锰钢片发生反复弯曲变形,自由端的质量块做上下往复的沉浮运动,利用流固耦合效应,当外载气动力的频率与抑制器的频率相耦合,改变了方向舵的稳定性边界,缩小了嗡鸣发生的频率范围,粘弹性阻尼条通过反复的拉伸、收缩运动,将振动的一部分机械能耗散掉,降低了嗡鸣发生时的振动振幅,有效提高结构的疲劳寿命。


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    Titel :

    Rudder buzzing suppressor based on fluid-solid coupling effect


    Weitere Titelangaben:

    一种基于流固耦合效应的方向舵嗡鸣抑制器


    Beteiligte:
    ZHANG WEIWEI (Autor:in) / LUO FUQING (Autor:in) / GAO CHUANQIANG (Autor:in) / LYU ZHEN (Autor:in) / LIU YILANG (Autor:in) / SONG SHUFANG (Autor:in)

    Erscheinungsdatum :

    2021-02-02


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B64C AEROPLANES , Flugzeuge



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