Free-vibration analysis of sandwich panels with randomly irregular honeycomb core

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)

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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.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Adhikari, Professor Sondipon
Authors: Mukhopadhyay, T., and Adhikari, S.
College/School:College of Science and Engineering > School of Engineering > Infrastructure and Environment
Journal Name:Journal of Engineering Mechanics
Publisher:American Society of Civil Engineers
ISSN:0733-9399
ISSN (Online):1943-7889
Published Online:01 August 2016

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