Abstract: Seismic site response analyses are often carried out using constitutive models for soil behavior under cyclic loading that incorporate Masing rules. In such analyses the effect of cyclic degradation of stiffness and strength ...

Abstract: The results of torsional shear tests on a normally consolidated marine clay have been analyzed to check the common assumption of colinearity between the principal directions of stress and plastic strain increment. Shear ...

Abstract: The Masing rules, often used in modeling the behavior of soils under cyclic loading, are unreliable when there is significant cyclic degradation of the soil-strain curves. In the present paper it is shown that degradation ...