Accession Number : ADA305072

Title :   A Finite-Difference Program for Stresses in Anisotropic, Layered Plates in Bending.

Descriptive Note : Technical note,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HUNTSVILLE AL GEORGE C MARSHALL SPACE FLIGHT CENTER

Personal Author(s) : Salamon, Nicholas J.

PDF Url : ADA305072

Report Date : SEP 1975

Pagination or Media Count : 89

Abstract : Results from the initial phase of a study of the interlaminar stresses induced in a layered laminate that is bent into a cylindrical surface are given. The laminate is modeled as a continuum, and the resulting elasticity equations are solved using the finite-difference method. The report sets forth the mathematical framework, presents some preliminary results, and provides a listing and explanation of the computer program. Significant among the results are apparent symmetry relationships that will reduce the numerical size of certain problems and an interlaminar stress behavior having a sharp rise at the free edges.

Descriptors :   *STRESS ANALYSIS, *LAMINATES, STRESS STRAIN RELATIONS, COMPUTER PROGRAMS, MATHEMATICAL MODELS, LOAD DISTRIBUTION, MATRICES(MATHEMATICS), LOADS(FORCES), DISPLACEMENT, ELASTIC PROPERTIES, PHASE STUDIES, FINITE DIFFERENCE THEORY, SHEAR STRESSES, SYMMETRY, PARTIAL DIFFERENTIAL EQUATIONS, BENDING STRESS, GRAPHITE EPOXY COMPOSITES, STRESS CONCENTRATION.

Subject Categories : Laminates and Composite Materials
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE