Dear all
Is the basic Hypo-Plastic model (Wollffersdorff’s model) suitable for 3D models?
Can I analyze 3D models with this UMAT? (https://soilmodels.com/download/umat-hyposand-uibk/)
Thank you
Sobhan
3D analysis with Basic Hypo-Plastic Model
Related Articles
-
Error in abaqus when use sanisand
mj saffarian||Constitutive Modelling|5 |Views 5,469
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 […] -
Question on the Matlab driver – model hypo Cam Clay
Hengyi Kang||Constitutive Modelling|2 |
Views 4,808
As a beginner to soil constitutive modelling, I am learning the hypoplastic models by reading the matlab drivers. I am confused with the matlab file f_hyp.m in the model hypo_camclay. […] -
Setting of Kw for Hypoplastic Clay UDSM in Plaxis
Joel Tan||Constitutive Modelling|2 |
Views 5,099
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 […] -
Shear Stiffness Calculation for Hypoplastic Model
Hashmi Sohawon||Constitutive Modelling|4 |Views 5,049
Hi David, I have reproduced some single elements test on ABAQUS using the UMAT to compare with Triax Hypoplasticity. So far, my stiffness curve (q vs ea) and my stress […] -
Abaqus user defined field
Van Doan||Constitutive Modelling|2 |Views 7,194
Hi, I am going to use the usdfld to function the density of sand changing due to confining pressure. I am not sure Abaqus will call the usdfld for every […] -
Issues in getting the negative values of q (mean deviatoric stress) while simulating cyclic triaxial test in ABAQUS using SANISAND subroutine.
MOHD SAQIB||Constitutive Modelling|5 |Views 5,307
Hello Everyone, I have been trying to simulate the cyclic triaxial test using the SANISAND04 subroutine. When I plotting the stress path (p-q plot), I am getting only the positive […] -
Hypoplastic sand-mr parameter calibration
anis kheffache||Constitutive Modelling|2 |Views 4,851
Dear all, I have a question about Hypoplasticity for sand model, i am having trouble to understand about how to calibrate the mr parameter ? Since no formula is provided […] -
Hypo-sand UMAT problem
sobhan abedinnejad||Constitutive Modelling|2 |Views 5,062
Dear community I have 4 Question in implementation of Hypo-sand Umat in ABAQUS could someone kindly explain? 1. I checked the Umat file from (https://soilmodels.com/download/plaxis-umat-hypoplas-zip/) and i understand this subroutine […]
Search SoilModels Website
Recent posts
-
Correct my Plaxis FEM simulation in foundation bearing capacity results 3.4.2026
-
mohr coulomb 2D yield surface vs 3D mohr coulomb yield surface 28.2.2026
-
Problem with GeoStudio (Seepage) software 16.2.2026
-
Prague Geotechnical Days 2026 3.2.2026
-
Postdoctoral position at COFS, UWA 28.7.2025
-
Hypoplasticity clay in ABAQUS 23.7.2025
-
Drucker-Prager Cap 29.5.2025
-
Abaqus RITSS with hypoplastic 9.4.2025
-
Fellin UMAT subroutine 2.4.2025
-
Hypoplasticity clay for triaxial compression in abaqus 26.3.2025
-
Abaqus RITSS methon for LDFE analysis with hypoplastic 17.3.2025
-
Request for VUMAT Implementation of Mohr-Coulomb, Drucker-Prager, or Drucker-Prager Cap 28.2.2025
Recent Comments
- Ding Yan on Download package of a complete dataset “Karlsruhe Kaolin – Cyclic tests (T. Wichtmann)”
- Arie Koot on mohr coulomb 2D yield surface vs 3D mohr coulomb yield surface
- Arie Koot on Multilaminate Model (Schädlich & Schweiger)
- Amir F on Problem with GeoStudio (Seepage) software
- Nabanita Saha on set cavitation limit in ABAQUS/STANDARD when using SANISAND umat
- Nabanita Saha on SANISAND Abaqus UMAT and Plaxis implementations
- Tian Fapai on SANISAND Abaqus UMAT and Plaxis implementations
- Heng Wang on Multilaminate Model (Schädlich & Schweiger)
- Zhang Hongwei on Download Package of Charles University Implementation of High Cycle Accumulation Model
- Ruimin Chen on Problem with VUMAT interface
- Nitesh Bhume on UMAT and oneAPI compiler issues. (SOLVED…i hope :p)
- Aleksandar Kostadinovic on Karlsruhe fine sand – Cyclic tests (T. Wichtmann)
- Amrane Moussa on Kadlíček, T., Ochmański, M., Mašín, D. and Duque, J. (2022) Report on Charles University implementation of high cycle accumulation model
- Ramon Varghese on SANISAND for FLAC3D Download
- Shuhan Cao on Hardening Soil or Hardening Soil-Small umat in Abaqus
- Kuikui Guigui on Hypoplastic Interface Model (Stutz et al., 2016)
- Kuikui Guigui on Download Package for Hypoplastic interface model and UMAT – FRIC interface
- Francisco José Mendez on Programme of the ALERT Olek Zienkiewicz school on Constitutive Modelling of Geomaterials, February 3 to 7, 2025, Prague, Czech Republic






Yes, sure, the implementation is fully 3D even when used in 2D analysis. In 2D just the off-plane strain components are deactivated. Regards David
Hi,
I’ve used it for relative simple models without problems. The tricky part is to identify and define properly the boundary conditions, but this is independet from the constitutive model and is a problem of 3D modelling.