The equations for a vertical cut in cohesive material are given in several publications including Heyman (1973): The stability of a vertical cut (see attachment Equations1.jpeg) and Verruijt (2001) Soil […]
SoilModels Forum
Compile triax calibration software under windows

Views 4,137
1. Download install exe (32 or 64 bit) from https://cygwin.com/install.html 2. Choose a mirror site / click Next and select all packages you need for compiling: Type: “gcc” into search […]
A PhD-level course on hypoplastic constitutive modelling intended for both academia and practitioners.
Hypoplastic Interface Model: Virtual Shear Zone Thickness and Surface Rougness Coefficient

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Hello, I want to use Hypoplastic Interface (Fric Subroutine) in my ABAQUS contact models. However, I don’t know how I can determine Virtual Shear Zone Thickness. It is the Parameter […]
Multilaminate model (Schädlich, Schweiger and coworkers) is now available for download as Plaxis UsrMod. Thanks to Helmut Schweiger and coworkers from Graz University of Technology, Institute of Soil Mechanics, Foundation Engineering and Computational […]
Hypoplasticity (sand and clay models) is now available for GeoSlope SIGMA/W finite element code in a form of user defined Add-In. The implementation is based on ABAQUS umats and it […]
Velacs Project Data

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Dear colleagues, I want to ask your help — does anyone know where we can find all the test data from the old Velacs Project? If so, that would be […]
Error: permission to access files denied (Hypoplasticity in PLAXIS)

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Hello, I am trying to implement the dll for hypoplasticity in Plaxis 3D. It runs through both the Initial Phase and a Nil Step. However, when it calculates about 20 […]
Triaxial Callibration test with Hypoplasticity

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Dear all I am trying to calibrate the HP for sand, and I have quite comprehensive data. but they are not totally consistent with each other . we have the […]
Calibration of Hypoplastic material model parameters

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I would like to derive material parameters based for a simulation which will implement the hypoplastic material model based on the following information: • Heavily overconsolidated • Very dense, fine […]
Original Announcement of the soilmodels.info project in 2007

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Did you know about history of SoilModels? Here you can download the original announcement, written during September 2007 meeting of ALERT association in Aussois, France and published in the International Journal […]
SoilModels News – Barodesy, Incremental Driver update, post views count and ExCalibre input files

Views 382
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 […]
Hypoplastcity sand model

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Not able to run the subroutine ……..error is coming ……UMAT: illegal (negative) actual void ratio detected Can anybody help
Geotechnical software and constitutive model database has just been launched at SoilModels. With this new functionality, users can select a constitutive model and they will directly see in which finite […]
Upated version of SANISAND umat including Plaxis interface

Views 1,230
New version of SANISAND umat, including interface for Plaxis, is now available in Download section (https://soilmodels.com/sanisand/). Original implementation has been developed by M. Martinelli, C. Miriano and C. Tamagnini in 2013. This […]
Subroutine of SANISAND model

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I am trying use sanisand subroutine posted in this website. But it is not working. Getting no values for field variable in the odb. I think i am missing something. […]
Download sharing at SoilModels

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If you want to share some material for download at SoilModels with the others such as the presentations in this post: Presentations on hypoplasticity applications, D. Mašín, NGI 2017 please […]
Presentations on hypoplasticity applications, D. Mašín, NGI 2017

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Based on some requests, I share here two presentations on hypoplasticity applications. One is related to simulation of various boundary value problems, the other focuses on simulation of cyclic and […]
Tochnog Professional 100 element free version, www.tochnogprofessional.nl

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The Tochnog Professional finite element program is now available as free version with 100 elements. It can be downloaded without registration from http://www.tochnogprofessional.nl. Several commercial and free pre- and postprocessors […]
The ALERT Olek Zienkiewicz Winterschool 2018 on Natural versus compacted clayey soils: from micro to macro behaviour and modelling will be held from 5th to 9th of November 2018 in […]
Triax element test driver

Views 502
A new element test driver named “Triax” has been included into the list of calibration software available at https://soilmodels.com/triax including source code and pre-compiled Windows and Linux executables. I have been using […]
Calculation of coordinates of climbing formwork using hypoplasticity and pressuremter tests

Views 3,251
Our article published in the latest issue of Ground Engineering 10/2017. Great combination of cone-pressueremeter-testing (CPM) by FUGRO and advanced 3D Fem modelling by GEOLINK using hypoplastic constitutive equations to […]
SoilModels presentation and logo

Views 137
At the following link, you may find a short presentation on SoilModels from the ICSMGE conference in Seoul, Korea, September 2017. Please feel free to distribute the presentation among your […]
Two new umats are available now at SoilModels, thanks to Wolfgang Felling of the University of Innsbruck. These umats use different integration scheme compared with the other sand hypoplastic umats. […]
Dear collagues and friends, SoilModels has been around for 10 years now. Though we found the project succesfull in disseminating advanced material models in geotechnical engineering, we still see it […]
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BCV bentonite experimental and modelling datasets 14.11.2023
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Problem with UMAT for clay hypoplasticity. Program exiting. 30.6.2023
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Example of FLAC3D data file 10.6.2023
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sigini ans sdvini subroutine example for soil model in Abaqus 6.6.2023
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Presentations from Prague Geotechnical Days 2023 including 29th Prague Geotechical Lecture by Yannis Dafalias 25.5.2023
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