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) : Chung, I ; Weitsman, Y J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a265556.pdf


Report Date : May 1993


Pagination or Media Count : 28


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.


Descriptors :   *PHYSICAL PROPERTIES , *FIBER REINFORCED COMPOSITES , *NONLINEAR ANALYSIS , COMPRESSION , SHEAR PROPERTIES , ELASTIC PROPERTIES , FAILURE , MECHANICS , EQUATIONS , COMPRESSIVE STRENGTH , FAILURE(MECHANICS) , PARTIAL DIFFERENTIAL EQUATIONS , BUCKLING , STRAIN(MECHANICS) , DEFLECTION , LOADS(FORCES) , MATERIALS , MODELS


Subject Categories : Ceramics, Refractories and Glass


Distribution Statement : APPROVED FOR PUBLIC RELEASE