Accession Number:

ADA265556

Title:

A Mechanics Model for the Compressive Response of Fiber Reinforced Composites

Descriptive Note:

Technical rept.,

Corporate Author:

TENNESSEE UNIV KNOXVILLE DEPT OF ENGINEERING SCIENCE AND MECHANICS

Personal Author(s):

Report Date:

1993-05-01

Pagination or Media Count:

28.0

Abstract:

This article presents a model for the uni-axial compressive response of uni-directionally reinforced fibrous composite. The model incorporates the non-linear shear response and the failure strain of the matrix, accounting for both aspects within a non-linear field equation which governs the load- deflection process. In addition, the model considers the effects of two kinds of geometric imperfections, namely, initial fiber waviness and random fiber spacing. It is shown that under uni-axial compression random fiber spacing may instigate the formation of severe transverse loadings on the fibers which suggest the existence of a transitional mechanism from micro-buckling to micro- kinking. Computational results are presented which illuminate the effects of several material and geometric factors on the compressive strength of composites.

Subject Categories:

  • Ceramics, Refractories and Glass

Distribution Statement:

APPROVED FOR PUBLIC RELEASE