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On the Influence of the Mounting Stiffness on Dynamics of a Double-Link Aerodynamic Pendulum
 
PIIS086956520001373-3-1
DOI10.31857/S086956520001373-3
Publication type Article
Status Published
Authors
Yu. Selyutskiy 
Occupation: leading researcher
Affiliation: Institute of Mechanics of Lomonosov MSU
A. Holub
Occupation: leading engineer
Affiliation: Institute of Mechanics of Lomonosov MSU
Journal nameDoklady Akademii nauk
Edition
Pages254-257
Abstract

Dynamics of a double aerodynamic pendulum is considered. The blade is rigidly attached to the second link. The first link of the pendulum is mounted elastically. The influence of the mounting stiffness upon the dynamics is analyzed. The conditions of stability are derived for the steady state of the system in which both links are directed along the flow. It is shown that the increasing of the mounting stiffness can lead to the loss of stability of this steady state. Experiments with such pendulum were performed in the wind tunnel of the Institute of Mechanics of Lomonosov MSU. The speed of the flow and the locations of the blade with respect to the second link were varied. The experimental data are in the qualitative agreement with the results of numerical simulation.

Keywordsself-sustained oscillations, aeroelasticity, limit cycles, wind power station, stability
Received14.10.2018
Publication date16.10.2018
Number of characters552
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