Engineering Mechanics

International Conference

Proceedings Vol. 7 (2001)



May 14 – 17, 2001, Svratka, Czech Republic
Editors: Alena Poživilová and Jan Masák

Copyright © 2001 Institute of Thermomechanics, Academy of Sciences of the Czech Republic, Prague

ISBN 80-885918-64-1 (printed)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

list of papers scientific commitee

Aeroelastic instability of a system with nonconservative and gyroscopic forces
Náprstek J., Pospíšil S.
pages 186 - +8p, full text

Slender structures exposed to a cross air flow are prone to vibrations of several types resulting from aeroelastic interaction of a flowing medium and a moving structure. Aeroelastic forces are the origin of nonconservative and gyroscopic forces influencing the stability of a system response. Using a linear mathematical model conditions of a dynamic stability loss and a detailed analysis of a stability domain has been done. Response properties of a system located on a stability boundary together with tendencies in its neighbourhood are presented and interpreted from physical point of view. Results can be used for an explanation of several effects observed experimentally but remaining without theoretical explanation until now.

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Text and facts may be copied and used freely, but credit should be given to these Proceedings.

All papers were reviewed by members of the scientific committee.

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