ASBS asymptotic state boundary surface BVP boundary value problem CP cyclic preloading GIS generalized intergranular strain HP hypoplasticity after von Wolffersdorff IP integration point IS intergranular strain after Niemunis and Herle ISI intergranular strain improvement KFS Karlsruhe fine sand NHP neohypoplasticity ZS Zbraslav sand 1 Introduction Numerous constitutive models have been developed in the last decades for the mathematical description of the mechanical behavior of soil.
