  An assumption in micromechanical analysis of polymers is that the
constitutive polymeric media is non-porous. Non-porosity of media, however, is
merely a simplifying assumption. In this paper, we neglect this assumption and
studied polymer networks with a different porosity volume fraction. A random
morphology description function is used to model the porosity of the network
and nonlinear finite element analyses are conducted to perform structural
analysis of porous polymer networks. The results show that the porosity effect
is significant in mechanical behavior of polymer networks and may increase the
maximum Von-Mises stress drastically.
