Building on a previous double-structure hypoplastic model, a new THM viscohypoplastic bentonite (VIBE) model is presented that incorporates time-dependent behaviour, notably stress relaxation and creep.
Various extensions of the original concept of intergranular strain (IS) according to Niemunis and Herle (1997), to account for small strain effects in constitutive models, have developed in recent years.
This page (which is currently under construction) is intended to provide an overview of existing intergranular strain extensions combined with corresponding implementations.
A high-cycle explicit model for the accumulation of strain in sand due to small cyclic loading. The dependence of the accumulation rate on stress, void ratio, cyclic history and the type of loading is considered. In particular, the ovality and the polarization of the strain path during a cycle are taken into account.
A simple soil model for predicting settlement of shallow foundations on sand. It incorporates a simple isotropic linear elastic component, a Mohr–Coulomb yield surface, the original Cam Clay flow rule and a simple asymptotic strain-hardening rule.
Model to simulate the cumulative feature of volumetric contraction of fine-grained soil subjected to thermal cycles. A thermal stabilization line is introduced to control the stabilized volumetric contraction under thermal cycles.
The PM4Sand and PM4Silt models are stress-ratio controlled, critical state compatible, bounding surface plasticity models developed for geotechnical earthquake engineering applications.
The PM4Sand and PM4Silt models are stress-ratio controlled, critical state compatible, bounding surface plasticity models developed for geotechnical earthquake engineering applications.
Multilaminate constitutive models are based on the concept that the material behaviour can be formulated on a number of so-called integration planes with varying orientation. In addition to other features, the model predicts anisotropic soil stiffness at small strains.
Barodesy is a constitutive model for granular media and does not use standard notations of elasto-plasticity, e.g. yield function, flow rule or plastic potential.
Model to represent the behaviour of interfaces based on hypoplasticity. A general approach to model interfaces using continuum constitutive models is adopted.
SANISAND is an advanced elasto-plastic model based on a concept of rotational hardening incorporating the effects of fabric-dilatancy.
Sand hypoplastic model is an advanced incrementally non-linear constitutive model for sand, an outcome of an extensive research at Karlsruhe University in 1990's.
Clay hypoplasticity is an advanced incrementally non-linear constitutive model based on critical state soil mechanics developed specifically for simulation of fine-grained materials.
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Recent posts
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Viscohypoplastic bentonite (VIBE) model 28.5.2026
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Problem in “Hoek Brown Softening” Model 30.4.2026
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XFEM Hydraulic Fracturing in Abaqus – Pore Pressure Not Updating & Extremely Small Time Steps 28.4.2026
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Correct my Plaxis FEM simulation in foundation bearing capacity results 3.4.2026
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mohr coulomb 2D yield surface vs 3D mohr coulomb yield surface 28.2.2026
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Problem with GeoStudio (Seepage) software 16.2.2026
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Prague Geotechnical Days 2026 3.2.2026
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Postdoctoral position at COFS, UWA 28.7.2025
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Hypoplasticity clay in ABAQUS 23.7.2025
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Drucker-Prager Cap 29.5.2025
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Abaqus RITSS with hypoplastic 9.4.2025
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Fellin UMAT subroutine 2.4.2025
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