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RESEARCH PAPERS

Web-Stiffened Sandwich Structures

[+] Author and Article Information
Y. N. Chen, D. Ranlet

Polytechnic Institute of Brooklyn, Brooklyn, New York

J. Kempner

Department of Aerospace Engineering and Applied Mechanics, Polytechnic Institute of Brooklyn, Brooklyn, New York

J. Appl. Mech 38(4), 964-970 (Dec 01, 1971) (7 pages) doi:10.1115/1.3408983 History: Received June 10, 1970; Revised September 12, 1970; Online July 12, 2010

Abstract

A model representation of a web-cored sandwich structure, which is based upon the energy principles of continuum theory while retaining the discrete nature of the webs, is studied. The determination of a second-order shear modulus, which measures local bending effects, accounts for the transverse shear deformation of the core. This notion is exemplified through consideration of the flexure and buckling of a web-stiffened sandwich beam, and by comparison of the results calculated from rigid frame analysis with those based on the sandwich solution. Additionally, the technique for employing classical Bernoulli-Euler modes in the eigenfunction expansion of displacement functions is extended and applied to the problems of free vibrations of a free-free web-stiffened sandwich beam.

Copyright © 1971 by ASME
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