带有阻尼环(套筒)的篦齿封严装置动力响应特性实验  

Experiments on dynamic response of labyrinth air seals with damping-ring/sleeves

作　　者：曾亮[1] 李琳[2] 

机构地区：[1]中国民用航空总局航空安全技术中心,北京100028 [2]北京航空航天大学能源与动力工程学院,北京100191

出　　处：《航空动力学报》2008年第10期1813-1820,共8页Journal of Aerospace Power

摘　　要：以带有开口阻尼环(套筒)的悬臂柱壳为对象,进行了悬臂柱壳/阻尼环(套筒)组合结构动力响应特性实验研究,并将实验结果与理论结果进行了对比,以验证理论分析的正确性.通过实验研究了阻尼环的安装位置、阻尼套筒的厚度、宽度、开口量和激振力等参数对组合结构动力响应特性的影响规律.阻尼环在悬臂柱壳上的安装位置对其减振效果有很大的影响;阻尼套筒通过"移频"和干摩擦阻尼作用,有效地降低了组合结构的振动峰值;当组合结构发生不同的周波型振动时,即使是相同的阻尼环(套筒),它的减振效果也是不同的.The experimental results of dynamic response for the shell with different damping-ring/sleeves verified the validity of the proposed simplified model and the numerical simulation results in this paper. The influences of variable parameters on the dynamic re- sponse, such as the width, thickness, gap size and installed position of damping-ring/sleeves were also discussed. The region of installation of damping-ring has great influence on its effect of vibration control. With the effect of ＂frequency-transfering＂ and friction damping, the damping sleeves reduce the peak of the vibration notably. When the shell vibrates in different circumferential waves, even for the same damping ring/sleeve, its effect of vibration control is different.

关 键 词：动力响应 篦齿封严装置 阻尼环(套筒) 

分 类 号：V231.9[航空宇航科学与技术—航空宇航推进理论与工程]