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 iteration or every step. I read the Abaqus user-defined field manual, but the wording is not clear. Anyone please help to answer my question. Thank you!
Related Articles
-
Question on the Matlab driver-hypoplastic models
Dear all, After carefully reading the matlab drivers of hypoplastic models, I was wondering why there is not mix control undrained TX compression. I want to achieve the same result […] -
Soil model for sand under drained cyclic loading
Hello all, I”m trying to simulate an axial cyclic loading in a drained soil using soil models like ISA hypoplasticity and SANISAND but for borh models the accumulated strain is […] -
Cyclic tests with Triax element test driver
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 […] -
UMAT for strain-rate effects
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 […] -
-
UMAT for Creep-SCLAY model.
Does anyone have the UMAT for the Creep-Clay model to be implemented in Abaqus? -
Mohr Coulomb umat in Abaqus
Dear all, does anyone have the umat code for Mohr Coulomb in Abaqus? For my current work I need a umat for Mohr Coulomb in Abaqus. It would be highly […] -
MSE walls design in Plaxis
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 […]
Supporting Organisations
Recent posts
-
Buy Tramadol Online | Eazmeds.com | 24 Hrs Delivery 9.8.2026
-
Animating Soil Mechanics 3.7.2026
-
GeoXPM 19.6.2026
-
Autumn School in Soil Modelling at NTNU 16.6.2026
-
Viscohypoplastic bentonite (VIBE) model 28.5.2026
-
Problem in “Hoek Brown Softening” Model 30.4.2026
-
XFEM Hydraulic Fracturing in Abaqus – Pore Pressure Not Updating & Extremely Small Time Steps 28.4.2026
-
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
Usdfld is called every iteration (standard) and every time increment (explicit).
Dear Aire
Thank you for your reply.
I have two more questions. Hope you can help.
1. When we tabular the values (for example Fiction angle and dilation angle are functioning by confining pressure and volumetric strain), do we need to write any code (such as “if-else”) to let Abaqus understand the corresponding limits) ? If not, is this Abaqus will automatically interpolate the value from the FV(1) and FV(2) in the input table.
2. What is the best method to examine Abaqus results are resulting by USDFLD subroutine
Thank you in advance and look to hear from you soon.