ABSTRACT
A range of constitutive models and numerical modelling strategies is described which may be used for analysis of dynamic geotechnical problems. Models can be developed from familiar simple elastic-plastic models in order to incorporate characteristics of soil response that are regarded as important. Such continuum models have been most successful for intermediate magnitudes of strains Where the soil loses its stiffness completely and liquefaction or localisation of deformation occurs then other modelling strategies may be more appropriate: for example, describing the liquefied soil as a viscous fluid, or using a rigid plastic model to analyse the movements occurring in a dynamic failure mechanism.
