Experimental Identification of the Dynamic Characteristics of a Flexible Rocking Structure
Accepted version
Peer-reviewed
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Authors
Acikgoz, S
Ma, Q
Palermo, A
DeJong, MJ
Abstract
This paper presents the results of free vibration and earthquake excitation tests to investigate the dynamic behaviour of freely rocking flexible structures with different geometric and vibration characteristics. The primary objective of these tests was to identify the complex interaction of elasticity and rocking and discuss its salient effects on the rocking and vibration mode frequencies, shapes and excitation mechanisms. The variability of response is discussed, including critical investigation of the repeatability of the tests. It was found that the variability in energy dissipation and energy transfer to vibrations at impact may lead to significantly different responses to almost identical excitations.
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Keywords
Rocking, Uplift, Impact, Vibration modes, Shake Table
Journal Title
Journal of Earthquake Engineering
Conference Name
Journal ISSN
1363-2469
1559-808X
1559-808X
Volume Title
Publisher
Informa UK Limited
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Sponsorship
The first author would like to thank Trinity College, Cambridge Overseas Trusts, Suna and Inan Kirac Foundation, University of Auckland and University of Canterbury for their financial and academic support.