Free-vibration analysis of sandwich panels with randomly irregular honeycomb core
Free-vibration analysis of sandwich panels with randomly irregular honeycomb core
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.
Irregular honeycomb core, Natural frequency, Random cell angle, Sandwich panel
Mukhopadhyay, T.
2ae18ab0-7477-40ac-ae22-76face7be475
Adhikari, S.
82960baf-916c-496e-aa85-fc7de09a1626
1 November 2016
Mukhopadhyay, T.
2ae18ab0-7477-40ac-ae22-76face7be475
Adhikari, S.
82960baf-916c-496e-aa85-fc7de09a1626
Mukhopadhyay, T. and Adhikari, S.
(2016)
Free-vibration analysis of sandwich panels with randomly irregular honeycomb core.
Journal of Engineering Mechanics, 142 (11), [06016008].
(doi:10.1061/(ASCE)EM.1943-7889.0001153).
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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Published date: 1 November 2016
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Publisher Copyright:
© 2016 American Society of Civil Engineers.
Keywords:
Irregular honeycomb core, Natural frequency, Random cell angle, Sandwich panel
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Local EPrints ID: 483539
URI: http://eprints.soton.ac.uk/id/eprint/483539
ISSN: 0733-9399
PURE UUID: 17cbf3c0-a89e-4546-84d4-da23e630ab6b
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Date deposited: 01 Nov 2023 17:57
Last modified: 18 Mar 2024 04:10
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Author:
T. Mukhopadhyay
Author:
S. Adhikari
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