Stress Distribution in Sandwich Beams in Uniform Bending

NJ Salamon

doi:10.1520/STP29309S

SYMPOSIA PAPER Published: 01 January 1981

STP29309S

Stress Distribution in Sandwich Beams in Uniform Bending

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The three-dimensional elastic stress state in a sandwich beam in uniform bending is given. The analysis is carried out numerically through use of a finite-difference formulation of the exact equations of elasticity. The beam is proportioned similar to one used in the characterization of composite materials and composed of [±45]_s composite face sheets laminated to a typical honeycomb core. It is shown that interlaminar stresses are confined to boundary regions near the free edges and that the inplane stresses converge to the laminate theory solutions in the interior of the beam despite the fact that the beam is deeper than it is wide. Importantly, the core/face sheet tractions are found to be insignificant.

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Salamon, NJ

West Virginia University, Morgantown, W. Va.

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Developed by Committee: D30

Pages: 166–177

DOI: 10.1520/STP29309S

ISBN-EB: 978-0-8031-4800-0

ISBN-13: 978-0-8031-0700-7

Stress Distribution in Sandwich Beams in Uniform Bending

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