Hi everyone When I use sanisand model in abaqus , This error is seen Can anyone help? Other subroutines work well for me Is it possible for my input parameters […]
SoilModels Forum
hypoplasticity umat filr
sobhan abedinnejad||Constitutive Modelling|2 |
Views 4,102
hello every one i have a problem with abaqus subroutine can i use hypoplastic umat file that prepared for palxis in this website in abaqus? or the files must be […]
Spurious oscillations in calculated accelerations
Piotr Kowalczyk||Constitutive Modelling|2 |
Views 4,144
Hello everyone, I have just a general question how people approach the problem of spurious oscillations generated in dynamic analysis when using nonlinear soil constitutive models. I understand sometimes numerical […]
ABAQUS Mesh-to-mesh solution mapping with Modified Cam Clay
Samanthika Liyanapathirana||Finite Elements|0 |
Views 3,846
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 […]
Difference between ExCalibre and Plaxis for Oedometer test
Marco Hofer||Constitutive Modelling|3 |
Views 4,208
Hello all, i did the automatic calibration for the Dobrany and Motol sand and tried to model the soil tests also in Plaxis and then to compare both. For the […]
Dear community, I’m interested in constitutive models that can handle strain-rate effects for HSR on sands for simulating free fall penetration. I would appreciate any help. Do you know any […]
Hypoplastic Model for Clays (Masin): Ag, ng or Gvh, n
Fernando Sarabia||Constitutive Modelling|1 |
Views 5,112
Dr. Masin I have downloaded the most recent dll for Plaxis that includes the HypoPlastic model for Clays that you developed. I see two new parameters (Gvh0 and n), both […]
Cyclic constitutive model for cemented granular soils
Hamoun Alimoradi||Constitutive Modelling|2 |
Views 4,130
if you could please let me know whether Is there any constitutive model exist for capturing cyclic response for cemented materials just like cemented sand and gravelly soils.
lade umat file
sobhan abedinnejad||Constitutive Modelling|0 |
Views 4,198
Hi everyone, I work on soil constitutive models and I want to compare soil behaviours with various constitutive models but I can’t find Lade umat in the .for format. Can […]
ExCalibre Automatic Calibration
Marco Hofer||Constitutive Modelling|5 |
Views 4,157
Hello all, i have another question regarding the calibration process. Why do the initial void ratios differ between the input file and the output from excalibre? What is done during […]
Cyclic simple shear test simulation with hypoplasticity
Piotr Kowalczyk||Constitutive Modelling|2 |
Views 4,669
Dear All, I am using sand hypoplastic model in my research and I have encountered some problem when looking into cyclic simple shear test in the range of small strains. […]
Hypoplastic Model inquire
Mahmoud Hamed||Constitutive Modelling|3 |
Views 4,142
Dear Prof. David Mašín Greetings I would like to discuss with you an issue. I have a problem in my simulation on ABAQUS. The problem in the simulation results is […]
ExCalibre Automatic Calibration
Marco Hofer||Constitutive Modelling|4 |
Views 4,042
Hello all, According to my last post some weeks ago I now have translated the laboratory data from engineering strain to true strain with the following formula: epsilon(true)=ln(1+epsilon(engineering)). I compared […]
Greeting Everyone, I’m a new user of ABAQUS. I’m trying to simulate soil dynamic compaction by Cap model. I simulated the blow by half sinusoidal wave. Although I used Cap […]
Calibration the UMAT sand hypoplastic parameters
aysar hassan||Constitutive Modelling|3 |
Views 4,028
Dear all, I’m facing trouble in calculating NO. 16 parameter in the UMAT for sand hypoplasticity by Dr. Masin, any help will be really appreciated especially with an example. Best […]
liquefaction simulation with abaqus
Ruibin Hou||Finite Elements|7 |
Views 4,379
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 […]
ABAQUS Linking With Fortran Compiler and Visual Studio
Hashmi Sohawon||Constitutive Modelling|4 |
Views 11,612
Hi all, Can somebody recommmend a good detailed guide for the procedures required to link ABAQUS 6.14 to Intel Fortran Compiler and Microsoft Visual Studio? Thank you, Hashmi
PhD course “Hypoplasticity for Practical Applications”
Hashmi Sohawon||Constitutive Modelling|2 |
Views 4,428
Are the slides in regards to Stiffness Anisotropy for Clay Hypoplasticity for the PhD course available online? The available document {Mašín, D. (2015) Part 4: Determination of material parameters, PhD […]
ExCalibre Automatic Calibration
Marco Hofer||Constitutive Modelling|2 |
Views 4,146
Hello all, i hava a problem with the Oedometer curves after the automatic calibration with ExCalibre. I took the Dobrany sand dataset for an automatic calibration and then i copied […]
How to model the settlement in soil due to water drawdown.
Guru Panda||Finite Elements|5 |
Views 4,008
Which software has the feature to model soil settlement due water drawdown?
Modeling of granular soil by using UMAT hypoplastic in Abaqus
Naif Alsanabani||Finite Elements|5 |
Views 4,029
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, […]
Prague Geotechnical Days 2019 – May 13-14
David Mašín||Event Announcements|0 |
Views 3,760
Everyone is invited to join our annual event “Prague Geotechnical Days”. As always, interesting programme has been assembled this year, including the 27th Prague Geotechnical Lecture by Prof. Dr.-Ing. Rolf […]
UMAT for hypoplastic subroutine
Naif Alsanabani||Finite Elements|4 |
Views 4,108
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
EasyTochnog input file generator
Dennis Roddeman||Finite Elements|0 |
Views 3,359
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 […]
DIANA FEA 10.3 new release – special on geotechnics
Ab van den bos||Event Announcements|1 |
Views 3,647
We are pleased to announce the release of DIANA 10.3, check out our Release Page to see all the new features, or to sign up for our webinar and/or course. […]
Calibration problem
Abdulaziz Abdelkadr||Constitutive Modelling|2 |
Views 4,099
Dear Prof. David Mašín I am posting the queries I have emailed you as per your advice to post it here. During calibration for the basic hypoplasticity parameters using the […]
Clay Hypoplastic Model ABAQUS UMAT
Hashmi Sohawon||Constitutive Modelling|3 |
Views 4,459
Hi, I wanted to ask if the variables/parameters defined in the online Hypoplastic model manual for PLAXIS (https://web.natur.cuni.cz/uhigug/masin/plaxumat/node6.html) are the same for the ABAQUS UMAT?
Prof. David Masin, I am posting the queries I have emailed you earlier which you have answered and therefore I am posting it here as per your request. I wish […]
Datasets now available at SoilModels!
David Mašín||SoilModels News|0 |
Views 723
At the very interesting workshop on soil cyclic behaviour at NGI, Norway, February this year, we had a dsicussion on building a database of soil parameters for different constitutive models […]
Book “Modelling of soil behaviour on hypoplasticity” has been published
David Mašín||Constitutive Modelling|1 |
Views 4,581
Hardcopies of my new book “Modelling of Soil Behaviour with Hypoplasticity – Another Approach to Soil Constitutive Modelling” just arrived. The book is available for hardcover or pdf orders at https://www.springer.com/us/book/9783030039752
Tochnog Professional Page moves
Dennis Roddeman||Finite Elements|1 |
Views 3,276
Hi All, Starting from Saturday January 26 2019 the Tochnog Professional page moves to http://www.tochnogprofessional.nl Best, Dennis Roddeman
Plaxis 3D Tunnel
Mesut Demir||Finite Elements|0 |
Views 3,631
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 […]
Hypoplastic model for Granular soil
Naveen Meena||Constitutive Modelling|5 |
Views 4,963
Hello everyone, Could you please anyone tell me that how I can define the hypoplastic constitutive model for granular soil in ABAQUS 6.13. With Regards, Naveen.
Calibration Sand Hypoplasticity whit ExCalibre
Francisco Mendez||Constitutive Modelling|3 |
Views 4,146
Dear all I have some laboratory test of Pescara sand and I’m trying to find the von Wolffersdorff parameters of this sand. So I have used ExCalibre with the data […]
New book “Modelling of Soil Behaviour of Hypoplasticity”
David Mašín||Constitutive Modelling|0 |
Views 7,337
I have just returned to Springer proofs of my new book “Modelling of Soil Behaviour of Hypoplasticity – Another Approach to Soil Constitutive Modelling“. It will probably still take few […]
multi yield surface model
kamal paknejad||Constitutive Modelling|6 |
Views 4,680
Hi everyone, i am trying to write umat subroutine for multi yield surface plasticity model.if its possible give me some information to do my project better and if some body […]
ExCalibre – Definiton of q
Manuel Winkler||Constitutive Modelling|3 |
Views 4,137
Hello, I am performing calibration trials for the hypoplastic sand model with the aid of ExCalibre and i was wondering how the deviatoric stresses q for the triaxial test input […]
ALERT Geomaterials – SoilModels support declaration
David Mašín||Constitutive Modelling|0 |
Views 4,195
ALERT Geomaterials (The Alliance of Laboratories in Europe for Education, Research and Technology) is a European organisation including 33 Universities or Organisations, which are most active in the field of numerical […]
Constitutive Model for clayey sand Soils Considering the Effect of Intergranular Physicochemical Forces
Mehdi Ghatei||Constitutive Modelling|0 |
Views 4,086
Hi all, I’m doing some experimental work to investigate the salinity effect on clayey sand behaviour. Is there any constitutive model considering the physicochemical forces for such materials? Regards, Mehdi
14th International Conference Underground Construction Prague 2019
David Mašín||Event Announcements|0 |
Views 3,544
The ITA-AITES Czech Tunnelling Association cordially invites you to 14th International Conference entitled “Underground Construction Prague 2019”, which will be held in Prague, the capital of the Czech Republic, June […]
Difficulties in calibration of triaxial test on Hochstetten sand by sand Hypoplasticity model
AKSHAY SAKHARE||Constitutive Modelling|2 |
Views 4,465
“A hypoplastic relation for granular materials with a predefined limit state surface” paper by P. A. Von Wolffersdorff April 1996 include a triaxial test result of sample 10cm diameter and […]
Interface to study soil-structure interaction in Plaxis 3D (Clay Hypoplasticity)
Leon Cortes||Finite Elements|6 |
Views 6,270
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 […]
The 2014 Masin hypoplasticity for clays has been implemented in Tochnog Professional under guidance of Dr. David Masin. This implementation includes structure, intergranular strains and visco effects. Extensions to the […]
Website editing capability for SoilModels members! SoilModels members can now edit website content associated with their accounts. While this change will be hardly noticeble to website visitors at the first […]
Messaging system launched at SoilModels
David Mašín||SoilModels News|0 |
Views 3,812
Messaging system has just been launched at SoilModels, so that SoilModels Members cant contact each other without a need for the system to reveal email addresses (they are never revealed). […]
An authorship of SoilModels database items has been updated so that real contributors are now indicated as authors, not the SoilModels admin. This gives more credit to our contributors. We […]
Greetings i used interface Vumat with Umat for simulating CEL problem, after 50% of analysis, i got the error as “Excessive incremental rotation of the elements in element set ” […]
SoilModels Publication Database including Mohr (1900) paper defining Mohr-Coulomb model
David Mašín||SoilModels News|0 |
Views 746
Publication Database has just been launched at SoilModels. Its aim is to collect papers, theses or presentations associated with constitutive models available in Constitutive Model Database. These papers will also […]
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Recent posts
- Degradation ( disturbance ) of hypoplastic clay 23.4.2024
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