Micromechanical and numerical estimates for transverse effective mechanical properties of fiber reinforced composites.

摘要

The main objective of this present research is to explore the overall mechanical behavior of continuously aligned fiber-reinforced composites by comparing micromechanical and numerical estimates for their respective transverse effective elastic moduli.;Firstly, based on a two-dimensional (plane strain) micromechanical model and using the self-consistent approximation method, the effective transverse elastic moduli of two-phase composite containing randomly located yet unidirectionally aligned cylindrical fibers are estimated. Mathematica software is used to implement tensorial algebra and to carry out computations.;Secondly, numerical estimates of the transverse effective moduli are computed using the finite element method by ANSYS software.;Finally, the micromechanical and numerical estimates are compared side by side and found to be in good agreement which leads us to believe that micromechanical self-consistent approximation, although assuming an infinitely extended matrix, provides a reasonable estimate for the effective properties of composite materials.