抄録
Constitutive equation for the large elastoplastic deformation of soils is formulated based on the corotational logarithmic (Hencky) strain rate tensor proposed by Naghdabadi and Saidi and its extension to the tangential-subloading surface model proposed by Hashiguchi et al.. Here, the hyper-elastic constitutive equation of soils is formulated by incorporating the lnv-lnp linear relation for the isotropic consolidation and the shear modulus depending on the pressure modifying the Junbu's equation.