Damping Parameter Identification and Study of Metal Foam Filled Steel Tube
Publication: Journal of Materials in Civil Engineering
Volume 22, Issue 4
Abstract
Increasing the damping level is an important approach toward the rise of earthquake resistance capability of a structure. In this paper, the steel tube is filled with metal foam for increasing its damping level. A parameter identification method is developed for studying the contribution of different metal foams to the damping. Specimens of steel tubes of 1.2- and 2.4-mm wall thickness filled with open cell pure aluminum, close cell pure aluminum and close cell aluminum alloy are fabricated and experimentally studied with the developed parameter identification method. It is found from the experiment that under large excitation, the open cell pure aluminum foam and close cell aluminum alloy can increase the components’ damping level up to five times comparing with the steel tube itself.
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Acknowledgments
This work is sponsored by the National Natural Science Foundation of China (Grant No. NNSFC50578005).
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 22 • Issue 4 • April 2010
Pages: 397 - 402
Copyright
© 2010 ASCE.
History
Received: Feb 12, 2009
Accepted: Aug 5, 2009
Published online: Mar 15, 2010
Published in print: Apr 2010
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