Theoretical and experimental investigation on dynamic response of blade with squeeze-film air damper

被引：0

作者：

Chen L.-L. ^{[1
]}

Hong J. ^{[2
]}

Ma Y.-H. ^{[2
]}

机构：

[1] AVIC Commercial Aricraft Engine CO., LTD, Shanghai

[2] School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing

来源：

Tuijin Jishu/Journal of Propulsion Technology | 2016年 / 37卷 / 04期

关键词：

Complex stiffness; Dynamic response; Squeeze-film air damper;

D O I：

10.13675/j.cnki.tjjs.2016.04.018

中图分类号：

学科分类号：

摘要：

In order to design a squeeze-film air damper attached to a blade, a theoretical and experimental study has been conducted for the analysis on the vibrating response and the design method on blade with squeeze-film air damper. A complex stiffness was introduced to represent the air pressure in the cavity. Combined with the theory of squeeze-film, a theoretical model of the damper has been developed. The stain energy and dissipated energy were integrated from the real part and imaginary part of the complex stiffness to determine the stiffness coefficient and damping coefficient. An experimental study was carried out for a blade and the results were compared with the numerical prediction. The effects of thickness and location of film were obtained from the results. The thickness of film should be less than 0.2 mm, and the centre of the film should be closed to the nodal line. © 2016, Journal of Propulsion Technology. All right reserved.

引用

页码：733 / 740

页数：7