Modeling and vibration feedback control of rotating tapered composite thin-walled blade

被引:8
|
作者
Shim, JK [1 ]
Na, S [1 ]
机构
[1] Korea Univ, Dept Mech Engn, Sungbuk Ku, Seoul 136701, South Korea
来源
KSME INTERNATIONAL JOURNAL | 2003年 / 17卷 / 03期
关键词
vibration control; piezoactuator; rotating blade; thin-walled beam; composite materials;
D O I
10.1007/BF02984364
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
This paper addresses the problem of the modeling and vibration control of tapered rotating blade modeled as thin-walled beams and incorporating damping capabilities. The blade model incorporates non-classical features such as anisotropy, transverse shear, secondary warping and includes the centrifugal and Coriolis force fields. For the rotating blade system, a thorough validation and assessment of a number of non-classical features including the taper characteristics is accomplished. The damping capabilities are provided by a system of piezoactuators bonded or embedded into the structure and spread over the entire span of the beam. Based on the converse piezoelectric effect, the piezoactuators produce a localized strain field in response to a voltage and consequently, a change of the dynamic response characteristics is induced. A velocity feedback control law, relating the piezoelectrically induced transversal bending moment at the beam tip with the appropriately selected kinematical response quantity is used and the beneficial effects upon the closed-loop dynamic characteristics of the blade are highlighted.
引用
收藏
页码:380 / 390
页数:11
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