Permeability estimation of unidirectional reinforcements based on the homogenization theory
基于均匀化方法的单向纤维增强体渗透率预报

In this paper, Stokes equation is introduced to describe the micro-flow through a fibrous preform with a periodic microstructure. The formulation used to predict the permeability of the fibrous preform is derived based on the asymptotic homogenization. Stokes equation is analogized with Lame equation used in the linear elasticity. An approach in which the finite element program for the linear elastic plane strain problem is employed to solve Stokes equation is presented. A FOTRAN program HAPS is composed to solve the governing equation. The results of the permeability obtained by the approach are compared with the others in literatures and it shows a good agreement.