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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SANISAND umat issue 18.9.2020
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SANISAND pile-soil-interaction ABAQUS 10.9.2020
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Abaqus user defined field 27.8.2020
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Hardening parameters (yield stress & absolute plastic strain) 24.8.2020
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Errors of sand hypoplastic model with Abaqus Vumat 17.8.2020
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Barodesy download package including small strain stiffness and strength reduction (UMAT and PLAXIS dll) 15.8.2020
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Question on the Matlab driver-hypoplastic models 8.8.2020
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Hypoplastic Interface Model: Does anybody implemented this model in FLAC3D 31.7.2020
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Question on implementation of sand hypoplastic model with Abaqus umat 28.7.2020
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General questions on implementation of sand hypoplasticity model with Abaqus umat 23.7.2020
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SANISAND 2008 model 23.7.2020
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Question on the Matlab driver – model hypo Sand 20.7.2020
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