Limit cycle oscillation suppression of 2-DOF airfoil using nonlinear energy sink

被引：0
|
作者：
Hu-lun Guo
Yu-shu Chen
Tian-zhi Yang
机构：
[1] Tianjin University,School of Mechanical Engineering
[2] Tianjin Key Laboratory of Nonlinear Dynamics and Chaos Control,School of Astronautics
[3] Harbin Institute of Technology,Department of Engineering Mechanics
[4] Shenyang Aerospace University,undefined
来源：
Applied Mathematics and Mechanics | 2013年 / 34卷
关键词：
two-degree-of-freedom (2-DOF) airfoil; flutter; limit cycle oscillation (LCO) suppression; nonlinear energy sink (NES); V215.3; 4; O322; 34C15; 70Kxx;
D O I：
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中图分类号：
学科分类号：
摘要：
This paper presents a novel mechanical attachment, i.e., nonlinear energy sink (NES), for suppressing the limit cycle oscillation (LCO) of an airfoil. The dynamic responses of a two-degree-of-freedom (2-DOF) airfoil coupled with an NES are studied with the harmonic balance method. Different structure parameters of the NES, i.e., mass ratio between the NES and airfoil, NES offset, NES damping, and nonlinear stiffness in the NES, are chosen for studying the effect of the LCO suppression on an aeroelastic system with a supercritical Hopf bifurcation or subcritical Hopf bifurcation, respectively. The results show that the structural parameters of the NES have different influence on the supercritical Hopf bifurcation system and the subcritical Hopf bifurcation system.
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页码：1277 / 1290
页数：13
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