Constitutive Modelling of Granular Materials

The misery of constitutive modelling; Does engineering need science; The role of models in civil engineering; Hypoplasticity then and now; A review of two different approaches to hypoplasticity; Uniqueness, second order work and bifurcation in hypoplasticity; Stationary states in hypoplasticity; Microscopic approach contributions to constitutive modelling; Discrete and continuum modelling of granular materials; 2nd Gradient constitutive models; Micro-mechanically based higher-order continuum models for granular materials; Relevant local variables for the change of scale in granular materials; On the physical background of soil strength; The influence of time derivative terms on the mechanical behaviour of loose sands; An approach to plasticity based on generalised thermodynamics; Comparison of hypoplasticity and elastoplastic modelling of undrained triaxial tests on loose sand; Hypoplastic and elastoplastic modelling - a comparison with test data; Strain response envelope: a complementary tool for evaluating hypoplastic constitutive equations; Modelling wathering effects on the mechanical behaviour of granite; A plasticity-based constitutive model for natural soils: a hierarchical approach; Experimental bases for a new incremental non-linear constitutive relation with 5 parameters; Implicit integration of hypoplastic models; Soil-water coupling analysis of progressive failure in cuts with a strain softening model; Advances in modelling soil anisotropy; Exemples of finite element calculations with the hypoplastic law; Hypoplastic simulation of complex loading paths.

Professor Dimitrios Kolymbas studierte Bauingenieurwesen an der Universität Karlsruhe, wo er am Institut für Boden- und Felsmechanik promovierte und sich habilitierte. Seit 1994 ist er Professor für Geotechnik und Tunnelbau an der Universität Innsbruck.