Accession Number : ADA307897

Title :   Structural Design Synthesis Approach to Filamentary Composites.

Descriptive Note : Contractor rept.,

Corporate Author : ALLIED RESEARCH ASSOCIATES INC CONCORD MA

Personal Author(s) : Gerard, George ; Lakshmikantham, C.

PDF Url : ADA307897

Report Date : NOV 1967

Pagination or Media Count : 40

Abstract : The first part of this paper is in the nature of a progress report on recent developments of analysis methods for filamentary composites. Theoretical predictions of the stiffness and strength properties of a unidirectional composite based on a knowledge of the constituent properties are correlated with experiments for both tensile and compressive loadings. The analysis of multilayer or laminated composites based upon the unidirectional composite properties then requires the rather straight forward use of classical anisotropic shell theory. Some structural aspects of filamentary composites designed for biaxial loads are considered in the second part. In particular, certain design restrictions inherent in the use of such composites become evident when compared to the more familiar isotropic sheet. Some of these restrictions can be overcome by a close matching of filament orientations and stress field. These factors serve to emphasize the overwhelming importance of creative structural concepts in the design of successful filamentary composites.

Descriptors :   *COMPOSITE MATERIALS, *LAMINATES, *FIBER REINFORCED COMPOSITES, LOAD DISTRIBUTION, STRUCTURAL PROPERTIES, MODULUS OF ELASTICITY, SHELLS(STRUCTURAL FORMS), STRENGTH(MECHANICS), ANISOTROPY, ISOTROPISM, GLASS FIBERS, BUCKLING, FILAMENTS, EPOXY COMPOSITES, DESIGN CRITERIA, POISSON RATIO, UNIDIRECTIONAL, SHEAR STRENGTH.

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE