Engineering Mechanics

International Conference

Proceedings Vol. 14 (2008)


ENGINEERING MECHANICS 2008

NATIONAL CONFERENCE WITH INTERNATIONAL PARTICIPATION
May 12 – 15, 2008, Svratka, Czech Republic
;
Editors: Vladimír Fuis and Michal Pásek

Copyright © 2008 Institute of Thermomechanics, Academy of Sciences of the Czech Republic, v.v.i., Prague

ISBN 978-80-87012-11-6 (printed)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

list of papers scientific commitee

AUTO-PARAMETRIC CHARACTER OF A STRUCTURE COUPLED WITH A SPHERICAL PENDULUM DAMPER
Náprstek J., Fischer C.
pages 164 - +18p., full text

The non-linear auto-parametric system with three degrees of freedom is investigated. System consists of a slender structure with one degree of freedom coupled with a spherical pendulum damper with two degrees of freedom. A harmonic external force is considered. A semi-trivial solution and its stability are analyzed. Special attention is paid to the resonance domain. The semi-trivial solution can lose its stability and various post-critical regimes occur. Three different types of the resonance domain are investigated. Their main properties depend significantly on dynamic parameters of the system and of the external excitation amplitude. Practical recommendations are focused to keep stability of the semi-trivial state. ´


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All papers were reviewed by members of the scientific committee.


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