Accession Number:

AD0752158

Title:

Composite Design Synthesis

Descriptive Note:

Semi-Annual technical rept. no. 1

Corporate Author:

BATTELLE MEMORIAL INST COLUMBUS OH COLUMBUS LABS

Personal Author(s):

• Vagins, Milton

Report Date:

1972-11-21

Pagination or Media Count:

39.0

Abstract:

The research being carried out deals with the problem of design synthesis in heterogeneous elasticity. Design synthesis is defined as the achievement of a desired design criterion, i.e., stress distribution, strength- to-weight ratio, etc., by preselecting a stress or displacement pattern in a stretched plate and then determining the variation of the elastic moduli that is required to permit the desired effects. The accomplishment of the desired effects requires the solution of the governing equations of elasticity, particularly the compatibility equation, in terms of preselected stress fields in the body for unknown material properties which are spatial functions. Mathematical design synthesis has been shown to be possible in certain specific applications. The selection of a design criterion, in the cases discussed, one dealing with stress distribution, and the development of the material distribution within a plane body such that compatibility is satisfied, appears to be a rational basis of design for composite materials. It is to be shown that this concept of design synthesis can be applied to the fabrication of real composite structures.

Descriptors:

• *COMPOSITE MATERIALS
• *ELASTIC PROPERTIES
• MATHEMATICAL ANALYSIS
• MECHANICAL PROPERTIES
• STRAIN(MECHANICS)
• STRESSES
• STRUCTURAL PROPERTIES

Subject Categories:

• Laminates and Composite Materials
• Structural Engineering and Building Technology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE