多孔質非局所弾粘塑性モデルを用いた変形の局所化に及ぼす不均一性と透水性の影響

抄録

Deformation behavior of clay specimen modeled as a viscoplastic model with second order strain gradient during shear is numerically analyzed by a soil-water coupled finite element method. In addition, effects of permeability and strain gradient term on growth rate of fluctuation were obtained by the linear instability analysis. It isfound that the strain localization pattern and stress-strain curve greatly depend on the initial inhomogeneity and the permeability.