A two dimensional rule-of-mixtures micromechanics model for woven fabric composites

A two-dimensional rule-of-mixtures micromechanics model is presented for pl anar woven fabric-reinforced. composites subjected to in-plane biaxial norm al loads. The impregnated warp/fill yarns are treated as orthotropic materi als and the interyarn matrix as an isotropic material. The undulations of b oth warp and fill yarns in two orthogonal directions are considered, and th e temperature effects are included. A set of iso-strain conditions, togethe r with the symmetry and periodicity requirements resulting formulation of t he present model is simple and more explicit than those of several existing analytical models. This model can deal with different weave patterns, undu lation shapes and constituent materials and hence may be viewed as a generi c approach Sample calculations are provided for plain weave, 5-harness and 8-harness satin weave woven composites to demonstrate applications of the p resent model and to compare with other known results.