Accession Number : AD0744505

Title :   A Tetra-Core Stress Analysis Model

Descriptive Note : Final rept. 28 May-17 Dec 1971

Corporate Author : BOEING CO SEATTLE WA

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

PDF Url : AD0744505

Report Date : Apr 1972

Pagination or Media Count : 263

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.

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

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE