  Molecular dynamics simulations are carried out to investigate mechanical
properties and porous structure of binary glasses subjected to steady shear.
The model vitreous systems were prepared via thermal quench at constant volume
to a temperature well below the glass transition. The quiescent samples are
characterized by a relatively narrow pore size distribution whose mean size is
larger at lower glass densities. We find that in the linear regime of
deformation, the shear modulus is a strong function of porosity, and the
individual pores become slightly stretched while their structural topology
remains unaffected. By contrast, with further increasing strain, the shear
stress saturates to a density-dependent plateau value, which is accompanied by
pore coalescence and a gradual development of a broader pore size distribution
with a discrete set of peaks at large length scales.
