Hello All, I am trying to simulate the seismic liquefaction in Abaqus. Can you please help me to model this. Best Regards’ Saqib
Dears all, I am using Tochnog professional software to model undrained cyclic triaxial test for behaviour and liquefaction studies. Is there an incremental driver model to execute for compressional cyclic […]
Boundary value problems for granular materials subjected to earthquake loading
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Dear All, Hope you all well, I have been searching for some good publications on the Boundary value problems on Foundation system with granular materials subjected to earthquake loading or […]
Hi, I am working in Abaqus, aiming to model double porosity clay consolidation data by using hypoplastic clay model with meta stable structure. First, i just wanted to verify basic […]
Dear all, I am a Ph.D. student at Kharazmi University. Recently I have been trying to simulate a triaxial compression test using the hypoplasticity model for clay using ABAQUS. The […]
Dear Prof. Masin and Soil Model Community, I am using HP clay subroutine in Plaxis 3D to simulate soil structure interaction problem. I want void ratio and OCR variation along […]
Dear all, I am trying to use Abaqus to modeling undrained cyclic triaxial test for liquefiable soil. I am wondering how could I applied the cyclic load. I should apply […]
Hello all, I am currently working on the FE modeling of anchors installation into the soil using the CEL analysis in Abaqus. I tried to use the hypoplastic vumat for […]
Dear concern, Recently i have modelled the soil pile interaction using Abaqus CEL method. The hypoplastic behavior of the soil is model using user subroutine VUMAT. The properties of the […]
Dear all, I am simulating static pile load test in the rock by using ABAQUS. For comparison of numerical results with the experimental, I need skin friction vs depth plot. […]
I have been a =n user of the open source version of Tochnog for since 2004. I have been one of the maintainers and have contributed to the capabilities of […]
Dear all, I am a PhD student in Hohai University. Recently I have been trying to simulate a triaxial compression test using the hypoplasticity model for clay. The UMAT subroutine […]
Hi everyone, I would like to ask if anyone has an example umat file for me to study to work on my master thesis researches. I would like to create […]
Hello everyone; I have implemented the Sanisand constitutive model (UMAT) in abaqus in the scope of performing a dynamic analysis on a 3D soil-pile interaction problem. I have succeded in […]
Barodesy download package including small strain stiffness and strength reduction (UMAT and PLAXIS dll)
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A new download package for Clay Barodesy is available in the download section (https://soilmodels.com/barodesy/) The model uses the basic model of barodesy for clay (Medicus G. and Fellin W. 2017) […]
Dear fellow, Anyone have SANISAND 2008 by Taiebat and Dafalias umat subroutine available for Abaqus. I have 2004 but I need 2008 one.
Hello everybody, Does somebody know a FEM Software with the implementation of PM4Silt model’s routine? I mean, one different from FLAC. Thanks for your help.
I am currently modelling a test conducted in the geotechnical centrifuge facility at HKUST. The test consisted of a sand slope with a rising water table. The slope height in […]
Slope stability calculation with hypoplasticity using phi-c reduction available now in download section
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The strength reduction method in clay hypoplasticity now available
ABAQUS modeling: Warning about unconnected regions when using hypoplasticity subroutine
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I ran a simple 3D model with symmetry boundary conditions first using elastic material and then as hypoplastic using a subroutine. However, in the former case, I don’t get the […]
Hi, I am doing Plane strain 2D simulation of GRPS embankment in ABAQUS, i encountered a problem that results of with geogrid and without geogrid both are showing same deflection. […]
Hello everybody, Using Hypoplastic model for clays, with intergranular concept parameters, I am simulating a simple oedometer test, phase by phase, using a dummy layer on the top of the […]
I am modelling sand slopes in Plaxis 3D using an HP model. I am using soil parameters from “Modelling of Soil Behaviour with Hypoplasticity” by David Masin (2019). During the […]
DIANA 10.4 released with full Geotechnical possibilities 3D as always, but now also 2D!
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We are pleased to announce that DIANA 10.4 is released with full 2D geotechnical possibilities. DIANA is already easy to use for full 3D geotechnical models, and now the more […]
Dear All, you can find a list with some of Tochnog Professional capabilities and application papers at: http://www.tochnogprofessional.nl/Tochnog_Professional_wikipedia_format.pdf Stay safe, Dennis Roddeman
In this post we will list built-in hypoplasticity formulations in the free Tochnog Professional program. Since these hypoplasticity options are built-in there is no need to link external umat routines. […]
Dear All, We posted a small overview movie of Tochnog Professional in YouTube. For more movies see the complete channel.
After several decades of development we are happy to announce that the Tochnog Professional finite element program has become free. Both for academic and commercial use. We are extremely grateful […]
Where the client was forced to make all his horizontal loaded Dolphins (piles) 10 m longer we could trustworthy proof that this actually was not necessary saving millions of cost […]
On the simulation of the cyclic mobility effect with an ISA -hypoplastic hypoplastic hypoplastic model, is it possible to simulate 3D liquefiable sandy soil by available u-mat file which is […]
Dear all, I recently conducted a numerical simulation of pile-soil interaction. I digged a vertical hole and insert the pile into that with general contact. Due to many reasons, I […]
I am trying to calibrate my sand using Excalibre. I tried some triaxial element tests using Abaqus. However the results are different between Excalibre and Abaqus.
Dear all, I’m trying to model multilayer soil in abaqus. To use the SaniSand umat in model I use the following parameters but no plastic strain at all. The unit […]
I tried to model sample of triaxial test in Abaqus program. I used hypoplastic subroutine. The parameters used in hypoplastic model was Hochstetten sand the given in website “https://web.natur.cuni.cz/uhigug/masin/plaxumat/node5.html”. The […]
Dear all, The sand hypoplastic model has been used to simulate the interaction between soil and pile. However, there is a bad convergence in the process of calculation. When I […]
Dear all, When I check the umat file of sand hypoplastic modeling, I find there are two parametesr(p_t(2), bulk_w(15)) without any definitions. Could someone kindly explain the exact meaning for […]
hi, every one i have problem with fortran format my abaqus is 6.14 and this version accept (.for) format for fortran but some subroutines are in (.f ) format is […]
Dear SoilModels community Dear Prof. Masin / all I want to know how HP model considers Ko variation for the following cases: Ko with variation with OCR? Ko determination related […]
Dear Prof David / SOil model community, I am performing coupled consolidation analysis for deep excavation in clay using HP clay model in Plaxis 3D. Performing the undrained analysis, the […]
I am using the mesh-to-mesh solution mapping with MCC model. The element type used is CPE8RP. My initial analysis runs without any issue and when the deformations reach a certain […]
Hello, everyone I am an abaqus user and developer. Recently, I want to simulating the liquefaction phenomenon with abaqus/standard or abaqus/explicit. As I know, this cannot be realized using the […]
Which software has the feature to model soil settlement due water drawdown?
Dear all I am using the UMAT of hypoplastic model for simulation soil (3D modeling) under cyclic loading. The analysis was completed at geostatic step. But for consolidation step (soil, […]
Hello all, Could you please anyone provide me umat for Hypoplastic model that used as subroutine in Abqus 6.14. With Best Regards Naif Mohammed
Hi All, Tochnog Professional now has an EasyTochnog extension, see http://www.tochnogprofessional.nl/easy_tochnog/page.php. With simple input data like pile diameter, pile length, slope geometry, sheet pile data, etc. a complete Tochnog Professional […]
Hi All, Starting from Saturday January 26 2019 the Tochnog Professional page moves to http://www.tochnogprofessional.nl Best, Dennis Roddeman
Hi Everybody, I would like to ask an error problem where I am getting while using Plaxis 3D tunnel V 1.2. Previously I was using the software with Windows 7 […]
Dear all, I’m using the UMAT file in which the hypoplastic model for thermal cycles is implemented. I have done some runs for an axisymmetrical model for a single energy […]
Dear all, I’m using the UMAT file in which the hypoplastic model for thermal cycles is implemented. In the Abaqus input file I have added the two lines necessary to […]
Interface to study soil-structure interaction in Plaxis 3D (Clay Hypoplasticity)
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Hello, I am trying to simulate the behavior of helical anchors (also called screw anchors) using PLAXIS 3D and a clay hypoplasticity constitutive model. The helical anchor shaft is simulated […]
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Recent posts
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K0 determination Reloading using HP clay model 22.2.2021
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Seismic Liquifaction 11.2.2021
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Modelling cyclic loads in Tochnog 11.2.2021
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Soft soil model vs Soft soil creep model 8.2.2021
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Boundary value problems for granular materials subjected to earthquake loading 8.2.2021
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Guidance for a newbie 6.2.2021
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Modelling Rate-dependent behaviour of clay [Urgent] 1.2.2021
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Postdoctoral Fellowship in computational geomechanics 27.1.2021
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USDM – Creep -SCLAY1S 25.1.2021
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Hardening Soil Model in Abaqus 25.1.2021
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Effects of water content in sand in hypoplastic strength parameters 25.1.2021
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Simulating Oedometer test in PLAXIS 24.1.2021
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