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Accession Number:
ADA278866
Title:
A Mechanics Mode for the Compressive Response of Fiber Reinforced Composites
Corporate Author:
TENNESSEE UNIV KNOXVILLE DEPT OF ENGINEERING SCIENCE AND MECHANICS
Report Date:
1994-03-29
Abstract:
This article presents a model for the uni-axial compressive response of uni-directionally reinforced fibrous composite. The model accounts for the non-linear shear response and the failure strain of the matrix, incorporating both aspects into 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.
Descriptive Note:
Technical rept. 1 Jan 1993-29 Mar 1994
Pages:
0032
Distribution Statement:
Approved for public release; distribution is unlimited.
Contract Number:
N00014-90-J-1556
File Size:
1.26MB
