Hi all, I want to do degradation (perturbation) of subplastic clay with ABAQUS, but I can’t do it with umat, changing K,A,sf in ABAQUS has no effect on the result, […]
SoilModels Forum
Hello everyone, I want to use ABAQUS to do the degradation of hypoplastic clay, but you can ‘t do it with umat. Changing K, A, sf in ABAQUS has no […]
Any one has a copy of Coulomb’s paper below, even better an English version? Thanks. Coulomb, C. A. (1773) Essai sur une application des régles de Maximis & Minimis à […]
Hi Everyone. I am new to this Platform. I want to use the hypoplastic model in my research. how I can download it UMAT file for ABAQUS software?
Prague Geotechnical Days 2024 “Geotechnical monitoring” and 30th jubilee Prague Geotechnical Lecture by prof. Eduardo Alonso
David Mašín||Event Announcements|0 |
Views 103
The 30th Prague Geotechnical Days international conference focused on Geotechnical Monitoring, including 30th Prague geotechnical Lecture by prof. Eduardo Alonso, will be held on May 13–14, 2024 Registration: free for […]
UMAT for Creep-SCLAY model.
isma khabis||Constitutive Modelling|0 |
Views 1,375
Does anyone have the UMAT for the Creep-Clay model to be implemented in Abaqus?
Cyclic tests with Triax element test driver
Konstantinos Chatzis||Constitutive Modelling|8 |
Views 1,071
Dear all, I am attempting to utilize the triax driver for simulating cyclic triaxial tests. However, I have been unable to locate the command for conducting cyclic tests within the […]
MSE walls design in Plaxis
Leo Alibert||Constitutive Modelling|2 |
Views 693
Hi everyone, this is my first post in this forum. I am collecting initial data on the most appropriate soil model for the analysis of a multitiered MSE wall. I […]
Beginner level question for this forum – Trying to replace a Mohr-Coulomb model of sand in an Anura3D simulation with a material model which accurately describes sand liquefaction. References I’ve […]
Challenges in simulating geomechanical models using Mohr-Coulomb with Tension Cut-Off in Abaqus
Chee Min Leong||Constitutive Modelling|1 |
Views 1,742
I am modelling an underground cavern for Compressed Air Energy Storage applications using Abaqus. To begin, I attempted to replicate the results presented in the provided paper: Damasceno, DR, Spross, […]
Dear all, I need to use ABAQUS to analyze the liquefaction of saturated soil under explosive load. How should I simulate this process? Currently I need the pore water pressure […]
Hardening soil Model UMAT
isma khabis||Constitutive Modelling|3 |
Views 4,441
I have the hardening soil model in the UMAT format. However, when I run the code, it gives me this error as shown in the picture. I tried to make […]
Problem with VUMAT interface
Giada Orlando||Constitutive Modelling|3 |
Views 3,424
Dear All, I am trying to run the VUMAT interface by Prof. Binen with the Sand Hypoplasticity. However, when I run the simulation Abaqus returns the following error: “Problem during […]
Dear all, A while ago, a person asked about the hypoplasticity umats, the problem was that the umats were not working when compiled using the oneAPI fortran compiler, an error […]
Oedometric Test Soil Test Plaxis
Ana Ribera||Constitutive Modelling|0 |
Views 2,388
Hi community, I am trying to simulate a oedometer test in soil test of plaxis but i am not reaching the expected results. In the Bentley manual available at the […]
Problem in simulating CPT using SANISAND04
an zhanng||Finite Elements|6 |
Views 1,465
I have a question regarding the simulation of cone penetration tests using the SANISAND04 model. I have observed that the parameter m (yield surface size)has a significant impact on the […]
Example of FLAC3D data file
Kassem Dib||Finite Elements|0 |
Views 2,042
Hello.. I am new in FLAC3D, could some send to me an example of data file code for pile soil interaction with seismic loads ? I will be thankful
sigini ans sdvini subroutine example for soil model in Abaqus
Safia EDAOUDI||Finite Elements|0 |
Views 1,073
Dear all, I’m looking for a sigini and sdvini subroutine examples to calculate soil initial state with rest coeficient K0 method or ICP-05 method or any method available. thank you. […]
Presentations from Prague Geotechnical Days 2023 including 29th Prague Geotechical Lecture by Yannis Dafalias
David Mašín||Event Announcements|1 |
Views 1,818
Hi all, Prague Geotechnical Days 2023 were indeed a successfull event. We are happy to let you know that selected presentations are now awailable in SoilModels publication database. In particular, […]
Problem in using Hypoplastic model for sand in Abaqus.
isma khabis||Constitutive Modelling|16 |
Views 1,972
Hello, I am using the UMAT code for sand hypoplasticity provided by Prof. Masin — https://soilmodels.com/download/plaxis-umat-hypoplas-zip/. I am simulating Axisymmetric condition in Abaqus. To check the results given by the […]
An error in the SANISAND umat runtime
Zhentao Liu||Finite Elements|15 |
Views 1,853
Dear all I was simulating a pile in a fully drained soil subjected to horizontal loads using ABAQUS (as shown in Figure 1) and noticed from the monitor that the […]
Htypoplastic Model in Miidas GTS NX
Kassem Dib||Constitutive Modelling|6 |
Views 2,340
Hello.. I am defining the hypoplastic parameters for Karlsruhe sand (found in a paper) using MIDAS GTS NX. In the software the a requesting (in addition of parameters) the number […]
set cavitation limit in ABAQUS/STANDARD when using SANISAND umat
Zhentao Liu||Finite Elements|6 |
Views 3,065
Dear all I am recently working on the mechanical characteristics of large diameter monopiles under horizontal loads.The numerical simulation part of this project was carried out in ABAQUS/STANDARD and for […]
Multi-objective analysis of the Sand Hypoplasticity model calibration
Francisco Mendez||Constitutive Modelling|0 |
Views 956
I am happy to announce that our pre-print paper, “Multi-objective analysis of the Sand Hypoplasticity model calibration”, is available on researchgate (https://www.researchgate.net/publication/369199567_Multi-objective_analysis_of_the_Sand_Hypoplasticity_model_calibration) and Axive (https://doi.org/10.48550/arXiv.2303.07234). In this work, we study […]
Problem with SANISAND UMAT
Safia EDAOUDI||Constitutive Modelling|3 |
Views 9,284
Hello all, I’m using the SANISAND UMAT I downloaded here for my research, the problem I found is it gives me wrong results in ABAQUS and INCREMENTAL DRIVER for element […]
Prague Geotechnical Days 2023 (22nd – 23rd of May) with Prague Geotechnical Lecture by prof. Yannis Dafalias
David Mašín||Event Announcements|1 |
Views 4,119
The 29th Prague Geotechnical Days international conference focused on issue of Cyclic Loading of Geotechnical Structures will be held on May 22–23, 2023 Registration: free for students, 80 EUR otherwise […]
What is an appropriate damping model for dynamic liquefaction analysis of tailings storage facility in FLAC?
Paul le Roux||Constitutive Modelling|0 |
Views 7,467
Has anyone had success simulating earthquake loading / dynamic liquefaction in a full-scale, plane-strain model of a TSF in FLAC2D/FLAC3D? The topic of damping is complex and the choice of […]
Abaqus vs Plaxis – Local Convergence Tolerances
Sina Azad||Finite Elements|1 |
Views 4,761
Hi, I have a question regarding local, material-level convergence tolerances in FE software, particularly Abaqus and Plaxis. I have experience using Abaqus but not much familiar with Plaxis. As shown […]
New features in Excalibre
David Mašín||Constitutive Modelling|0 |
Views 7,273
Hi all, We are happy to announce that the Excalibre team received support from the research grant GACR 22-12178S to further develop the calibration software, which is freely available at […]
Sanisand
Norma Harb||Constitutive Modelling|1 |
Views 3,439
Hello, I am simulating soil and pile using Sanisand on Abaqus. I have problems with the analysis because of the value of the parameter 18. When I use small values, […]
SaniSand Model in Plaxis 3D
Kassem Dib||Constitutive Modelling|1 |
Views 17,045
Hello.. I am using SaniSand constitutive model, for the simulation of the behavior of onshore wind turbine using plaxis 3d. The dll file published in the website request the determination […]
The GA-cal software for the automatic calibration of soil constitutive laws
Francisco Mendez||Constitutive Modelling|2 |
Views 6,230
I am happy to announce that our pre-print paper, “The GA-cal software for the automatic calibration of soil constitutive laws: a tutorial and a user manual”, is available on researchgate […]
Abaqus OneAPI Compiler
Kassem Dib||Finite Elements|1 |
Views 7,765
Hello.. I am testing SaniSand constitutive model as published by Mr. Masin at this site. The Abaqus is V21 and the visual studio 2017 with OneAPI compiler, the Abaqus verification […]
Few more Question on calculating lateral displacement of pile using hypoplastic clay model
Muhammad Ahmad||Finite Elements|0 |
Views 3,872
Dear Professor David, Thank you very much for your previous clarification. its really helps. In continuation to my previous , there are few more question, i want your kindself to […]
Hello, I am writting to ask how to get the elastic modulus or undrained strength of the soil in the simulation model by using hypoplastic model in clay? Is there […]
Problem in calculating Lateral displacement of the pile using Hypoplastic clay model
arsalan Ahmad||Finite Elements|4 |
Views 3,337
Hy Professor David, I am trying to verify the result of one of your paper by the title ‘Cyclic lateral response and failure mechanisms of semi-rigid pile in soft clay: […]
Special issue of Computers and Structures “Numerical simulation of multi‐physics phenomena in geotechnical structures”
David Mašín||Finite Elements|1 |
Views 5,680
https://www.sciencedirect.com/journal/computers-and-structures/about/forthcoming-special-issues Numerical simulation of multi‐physics phenomena in geotechnical structures Complete and thorough analysis of geotechnical structures, requires various complex materials models with internal structures, which cannot be described by the […]
Post-doctorate position at Nantes University (France) in geotechnical analysis of mutualized anchors
Abdul-Hamid Soubra||Position Announcements|0 |
Views 1,432
Dear colleagues, France Energies Marines is conducting, together with other partners (Nantes Université, EDF, WPD, TotalEnergies, Technip Energies, Université Grenoble Alpes, Innosea, Eolfi, Saipem, Université Gustave Eiffel), the MUTANC project. […]
Hi, I’m facing a problem with my model. I’m trying to simulate a helical pile in soil. When I create the job, my job doesn’t make any increment and the […]
Hi altruists, Hope all of you are doing well. I am looking for literature on the NorSand model, which considers the drained cyclic triaxial testing behavior. I have found a […]
Post-doc position at Charles University in the field of THM analysis of unsaturated and heated soil cyclic loading
David Mašín||Position Announcements|0 |
Views 1,901
International Postdoctoral Fellowship – Earth and Environmental Sciences Topic: In many geotechnical problems either saturated or unsaturated soils are subjected to a cyclic coupled thermo-hydro-mechanical (THM) loading. A prominent example […]
Shear modulus degragation
Baban Bapir||Constitutive Modelling|1 |
Views 4,648
Hello all, I am using the clay hypoplsticity model in Abaqus. As shown in the picture, I have to construct the stiffness desegregation curve to calibrate the R value. Can […]
FRIC code for clay hypoplasticity interface
Haran Gananathan||Constitutive Modelling|0 |
Views 4,803
Dear Prof Stutz and Prof Mašín, Is FRIC code for clay hypoplasticity available? If yes, could you please provide me with the link to download FRIC? Thank you Haran
Using pore fluid-stress element in SandSand
Kassem Dib||Finite Elements|1 |
Views 3,478
Hello everyone, Is it possible to use pore fluid- stress element in abaqus standard when soil is modeled using SANISAND constitutive model ? (UMAT)
“Warning LNK4210” – hypoplastic clay UMAT
Yu Xiao||Constitutive Modelling|1 |
Views 3,628
Hello Everyone, I am using the UMAT code for clay hypoplasticity provided by Prof. Masin — https://soilmodels.com/download/plaxis-umat-hypoplas-zip/ I made a test model in Abaqus2020 and applied the umat code (umat_hcea.for). […]
Prague Geotechnical Days 2022 with Prague Geotechnical Lecture by prof. Cino Viggiani
David Mašín||Event Announcements|0 |
Views 3,602
Everyone is cordially invited to attend Prague Geotechnical Days 2022, scheduled for May 23-24, which include Prague Geotechnical Lecture by prof. Cino Viggiani entitled “Recent Developments in Laboratory Testing of […]
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Recent posts
- Degradation ( disturbance ) of hypoplastic clay 23.4.2024
- Degradation ( disturbance ) of hypoplastic clay 23.4.2024
- Paper of Coulomb, C. A. (1773) 15.4.2024
- ABAQUS UMAT of hypoplastic clay model 6.4.2024
- Prague Geotechnical Days 2024 “Geotechnical monitoring” and 30th jubilee Prague Geotechnical Lecture by prof. Eduardo Alonso 5.4.2024
- UMAT for Creep-SCLAY model. 1.3.2024
- Cyclic tests with Triax element test driver 14.2.2024
- SUMMER SCHOOL ‘Numerical Modelling in Geotechnical Engineering’, Innsbruck – July 22nd-26th, 2024 1.2.2024
- COURSE IN SOIL MODELING – NTNU, Trondheim – October 14th to 18th, 2024 21.12.2023
- MSE walls design in Plaxis 11.12.2023
- sand liquefaction modelling in Anura3D 8.12.2023
- BCV bentonite experimental and modelling datasets 14.11.2023
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