ISA is a mathematical extension of conventional hypoplastic models for soils to improve simulations of cyclic loading. It can be considered as a reformulation of the conventional intergranular strain theory by Niemunis and Herle (1997).
A PhD-level course on hypoplastic constitutive modelling intended for both academia and practitioners.
SoilModels News – Barodesy, Incremental Driver update, post views count and ExCalibre input files
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Number of interesting news at SoilModels from past week: New Barodesy constitutive model, umat with source code and Plaxis DLL. Thanks to the researchers from the University of Innsbruck (Barbara […]
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.
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.
Download package of a Incremental Driver single element program by Niemunis (2007, 2014) for running element tests using constitutive models implemented in umat format.
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Recent posts
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Vibration foundation behavior 16.10.2021
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Getting started with UMAT for Hypoplastic clay model in ABAQUS 15.10.2021
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consistent tangent stiffness calculation in hypoplasticity sand UMAT 7.10.2021
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stress order in hypo umat seems to be incorrect 6.10.2021
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ALERT doctoral school on constitutive modelling – hands on session triax input files 2.10.2021
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Initial Stiffness of CU test in Masin’s 2014 Model 29.9.2021
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CONSTUTUTIVE MODELLING 22.9.2021
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Compatibility of subroutines in ABQ2021 17.9.2021
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Hypoplasticity sand convergence issues 17.9.2021
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MATLAB Code for Bounding Surface Plasticity Model 17.9.2021
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Non convergence problem in abaqus using hpoeca Clay Hypoplasticity in slope model 16.9.2021
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UMAT file for POROELASTICITY 31.8.2021
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