Accession Number:

ADA278865

Title:

On the Buckling/Kinking Compressive Failure of Fibrous Composites

Descriptive Note:

Technical rept. 1 Oct 1992-31 Jan 1994

Corporate Author:

TENNESSEE UNIV KNOXVILLE DEPT OF ENGINEERING SCIENCE AND MECHANICS

Personal Author(s):

• Chung, I.
• Weitsman, Y. J.

Report Date:

1994-03-29

Pagination or Media Count:

33.0

Abstract:

In this article it is demonstrated that the compressive response of unidirectionally reinforced composites may initiate in a micro-buckling mode and subsequently switch to a micro-kinked configuration. The foregoing possibility derives from a mechanics model which considers initial fibers misalignments, non-linear shear response of the matrix, shear deformable fibers and stochastic fiber spacings. The latter non-uniformity in fiber spacings plays a major role in the generation of fiber kinks. Various features of the compressive deformation and failure process are exhibited by computational examples.

Descriptors:

• *FIBERS
• *COMPOSITE MATERIALS
• *BUCKLING
• *FAILURE
• SHEAR PROPERTIES
• COMPUTATIONS
• MECHANICS
• RESPONSE
• SWITCHES
• COMPRESSIVE PROPERTIES
• MISALIGNMENT
• CONFIGURATIONS
• NONLINEAR SYSTEMS
• FIBER REINFORCED COMPOSITES
• DEFORMATION
• STOCHASTIC PROCESSES
• MODELS

Subject Categories:

• Laminates and Composite Materials
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE