The application of a kinematic elasto-plastic constitutive soil model to monotonic and cyclic loading for single element tests and simple boundary value problems is presented. The paper also describes the effect of the plastic and cyclic material parameters on the stress-strain response of a sand.

The results of these analyses demonstrate the ability of the model to reproduce the densification of a drained sand and the softening behaviour of a saturated sand during undrained cyclic loading, due to the build up of excess pore water pressures with each cycle. For validation purposes, a typical geotechnical problem subjected to monotonic loading is analysed and the model is shown to recover the correct collapse load.

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