Accession Number : ADA305404

Title :   Elastic Constants for Superplastically Formed/Diffusion-Bonded Corrugated Sandwich Core.

Descriptive Note : Technical paper,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION EDWARDS AFB CA DRYDEN FLIGHT RE SEARCH CENTER

Personal Author(s) : Ko, William L.

PDF Url : ADA305404

Report Date : MAY 1980

Pagination or Media Count : 82

Abstract : This paper presents formulae and associated graphs for evaluating the effective elastic constants for a superplastically formed/diffusion-bonded (SPF/DB) corrugated sandwich core. The results were used in the comparison of structural stiffnesses of the above sandwich core and a honeycomb core under conditions of equal sandwich core density. It was found that the stiffness in the thickness direction of the optimum SPF/DE corrugated core (that is, triangular truss core) was lower than that of the honeycomb core, and that the former had higher transverse shear stiffness than the latter.

Descriptors :   *STIFFNESS, *SANDWICH CONSTRUCTION, *SUPERPLASTICITY, SHEAR PROPERTIES, DENSITY, THICKNESS, ELASTIC PROPERTIES, CONSTANTS, HONEYCOMB CORES.

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE