Comprarison of Yasufuku's and Lade's Single Hardening Constitutive Models for Compacted Decomposed Granite Soil

Two constitutive models, Yasufuku's and Lade's constitutive models with a single yield surface are compared in terms of their capabilities to accurately capture the observed behavior of Iksan compacted decomposed granite soil for various stress-paths. The strains calculated from models are reasonable agreement with those measured, but some discrepancies occur. The largest differences between measured and from Lade model calculated strains occur for proportional loading with increasing stresses. Yasufuku's single hardening model may model the observed Iksan compacted decomposed granite Soil behavior with better accuracy for proportional loading with increasing stress and for p-constant loading with increasing stress ratio.