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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Connecting remote sensors to the Plaxis FEM 3D using python 26.7.2024
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Intergranular Strain Extensions 16.7.2024
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Abaqus Hypoplasticity Primary Variable Is Not Available 1.7.2024
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Vumat to calculate excess pore in Coupled Eulerian-Lagrangian ABAQUS 1.7.2024
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Drucker Prager Cap Hardening Model 20.6.2024
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Soil model for sand under drained cyclic loading 15.6.2024
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In Abaqus how do we use *DLOAD for defining both user-defined pressure and body force simultaneously? 15.6.2024
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Issue in applying SANISAND04 UMAT to Boundary-Value-Problem 31.5.2024
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Triaxial compression test using Mohr-Coulomb model in Abaqus 27.5.2024
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The Mises stress calculated by the hypoplasticity model considering the intergranular strain is all 0 20.5.2024
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Degradation ( disturbance ) of hypoplastic clay 23.4.2024
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Degradation ( disturbance ) of hypoplastic clay 23.4.2024
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