Accession Number : AD0744505

Title :   A Tetra-Core Stress Analysis Model.

Descriptive Note : Final rept. 28 May-17 Dec 71,

Corporate Author : BOEING CO SEATTLE WASH

Personal Author(s) : Dobyns,Alan L. ; Jack,David C.

Report Date : APR 1972

Pagination or Media Count : 261

Abstract : The results of a five-month analytical program are presented, describing a stress analysis method for a three-dimensional fiber composite structure. The intersections of the elements or webs of this structure form polyhedra in the form of triangular prisms, tetra-core, and truncated form of these. The finite-element model generates the elements and polyhedra automatically with an optimization routine which selects the minimum weight structure that will meet the stiffness and loads requirements. (Author-PL)

Descriptors :   (*COMPOSITE MATERIALS, STRESSES), STRUCTURAL PROPERTIES, OPTIMIZATION, MATHEMATICAL MODELS, COMPUTER PROGRAMS, REINFORCING MATERIALS, FIBERS, GEOMETRIC FORMS

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE