Abstract
We investigated the deformation process of Na2O-SiO2 glass under both tension and compression with constant strain rate by MD method. Under tension the glass flowed easily with decreasing of breakage and increasing rearrangement of network structure with increasing Na2O content. However, 9Na2O 91SiO2 glass had the largest fracture strain among the glasses. Under compression the glass densified difficultly with increasing Na2O content. Though the densification was dependent on the cavity of glass structure, the less than 26 % of cavity was shrank by densification.
