Response of Open Cell Aluminum Foams to Fully Reversed Cyclic Loading
Publication: Journal of Engineering Mechanics
Volume 137, Issue 12
Abstract
The response of metal foams to fully reversed cyclic loading has been investigated much less than the response to tension-tension and compression-compression cyclic loads. This paper describes tests of open cell aluminum foams that are subjected to fully reversed cyclic loading. Three different damage measures are evaluated as candidates for tracking the damage state in the material. These measures and associated failure criteria track the peak tensile stress, the peak compressive stress, and the ratio of the prepeak tensile and compressive material stiffnesses in each cycle. The peak tensile stress measure and criterion gave the most stable results. Finally, the fatigue lifetime is modeled by using a statistical Weibull model.
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Acknowledgments
The writers of this paper are indebted to Mr. Robert Brack for his continuing support of the CEE department of the University of Massachusetts Amherst, and especially of research activities in the structural engineering and mechanics group. This work has also been partially supported by the United States National Science Foundation through grant NSF#CMMI-1000334.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 137 • Issue 12 • December 2011
Pages: 911 - 918
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Nov 24, 2010
Accepted: Jul 1, 2011
Published online: Nov 15, 2011
Published in print: Dec 1, 2011
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