Free-Vibration Analysis of Sandwich Panels with Randomly Irregular Honeycomb Core
Publication: Journal of Engineering Mechanics
Volume 142, Issue 11
Abstract
An analytical framework has been proposed to analyze the effect of random structural irregularity in honeycomb core for natural frequencies of sandwich panels. Closed-form formulas have been developed for the out-of-plane shear moduli of spatially irregular honeycombs following minimum potential energy theorem and minimum complementary energy theorem. Subsequently an analytical approach has been presented for free-vibration analysis of honeycomb core sandwich panels to quantify the effect of such irregularity following a probabilistic paradigm. Representative results have been furnished for natural frequencies corresponding to low vibration modes of a sandwich panel with high length-to-width ratio. The results suggest that spatially random irregularities in honeycomb core have considerable effect on the natural frequencies of sandwich panels.
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Acknowledgments
TM acknowledges financial support from Swansea University through the award of a Zienkiewicz Scholarship. SA acknowledges financial support from the Royal Society of London through the Wolfson Research Merit Award.
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Information & Authors
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Published In
Journal of Engineering Mechanics
Volume 142 • Issue 11 • November 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Jan 31, 2016
Accepted: Jun 16, 2016
Published online: Aug 1, 2016
Published in print: Nov 1, 2016
Discussion open until: Jan 1, 2017
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