  We develop an effective medium approach to the mechanics of disordered,
semiflexible polymer networks and study the response of such networks to
uniform and nonuniform strain. We identify distinct elastic regimes in which
the contributions of either filament bending or stretching to the macroscopic
modulus vanish. We also show that our effective medium theory predicts a
crossover between affine and non-affine strain, consistent with both prior
numerical studies and scaling theory.
