Engineering Mechanics

International Conference

Proceedings Vol. 15 (2009)


May 11 – 14, 2009, Svratka, Czech Republic
Editors: Jiří Náprstek and Cyril Fischer

Copyright © 2009 Institute of Theoretical and Applied Mechanics, Academy of Sciences of the Czech Republic, v.v.i., Prague

ISBN 978-80-86246-35-2 (printed, Extended Abstracts)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

list of papers scientific commitee

Non-proportional damping effect on dynamic response of footbridges
S. Hračov, J. Náprstek, S. Pospíšil
pages 453 - 468, full text

Presented article deals with dynamic response of a footbridge equipped with tuned mass dampers (TMD) on vertical harmonic excitation. The installation of absorbers against undesired vibrations significantly changes the damping distribution on such type of structures. Commonly used presumption of proportional damping in mathematical models is sufficient, especially for approximative assessments of pedestrian discomfort. However taking the nonproportional damping into account results in more accurate solution of response. The differences in solution methods and in results for both types of damping are presented.

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All papers were reviewed by members of the scientific committee.

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