Yw. Jiang et al., A novel micromechanics-based approach to the derivation of constitutive equations for local/global analysis of a plain-weave fabric composite, COMP SCI T, 60(9), 2000, pp. 1825-1833
A stress and strain averaging procedure is presented in this paper for loca
l/global analysis of plain-weave fabric composites. Within a representative
volume cell, using uniform stress and uniform strain assumptions, the cons
titutive equations are averaged along the thickness direction. The cell is
then divided into many subcells and an averaging is performed again by assu
ming uniform stress distribution in each subcell to obtain the effective st
ress/strain relations of the subcell. As a result, a linear system of equat
ions is formed and subsequently solved to distribute the global average str
ains to each subcell. In this manner, given the average strains, the global
average stresses can be determined. Numerical results are generated for en
gineering constants and compared to other numerical predictions and experim
ental data. Good agreements are achieved with respect to experimental data
and finite-element results. (C) 2000 Elsevier Science Ltd. All rights reser
ved.