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The Effect of a Honeycomb Core on the Mechanical Properties of Composite Sandwich Plates

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Abstract:

When comparing composite sandwich analysis with an exact solution, the results of finite element modeling with an ANSYS shell 91 element agreed well with the exact solution. The practical applications of the shell 91 element are demonstrated with a four-point bend test conducted on sandwich beam specimens. The specimens comprised carbon/epoxy fabric face sheets and a honeycomb core. Two kinds of honeycomb cores were used to fabricate the composite sandwich specimens: an aluminum one and a glass/phenolic one. The predictions with the shell 91 element were also agreed well with the experimental results. A variety of tests was conducted; namely, a long beam flexural test, a short beam shear test, a flatwise tensile test, a flatwise compression test and an edge compression test. The sandwich plate with the aluminum honeycomb core had a specific bending stiffness that was 1.7 to 2.0 times higher than that of the sandwich plate with the glass/ phenolic honeycomb core.

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Info:

Periodical:

Key Engineering Materials (Volumes 297-300)

Pages:

2752-2757

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.297-300.2752

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Online since:

November 2005

Authors:

Cheol Won Kong, Se Won Eun, Jae Sung Park, Ho Sung Lee, Young Soon Jang, Yeong Moo Yi, Gwang Rae Cho

Keywords:

Composite, Flexural Stiffness, Honeycomb Core, Sandwich Plate

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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