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.

Report Date:

1972-04-01

Pagination or Media Count:

263.0

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