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
-
ExCalibre Automatic Calibration
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 […] -
lade umat file
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 […] -
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 […] -
PLAXIS 2D Embedded Pile Row
PLAXIS 2D require a “Lateral Resistance ” for the embedded pile row. The manuals are not very clear as to what the resistance represents? Is it on friction ( similar […] -
Calibration problem
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 […] -
Error in abaqus when use sanisand
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 […] -
Difficulties in calibration of triaxial test on Hochstetten sand by sand Hypoplasticity model
“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 […] -
Cyclic constitutive model for cemented granular soils
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.
Supporting Organisations
Recent posts
-
Zbraslav sand – Cyclic tests by Charles University 17.1.2023
-
New features in Excalibre 17.1.2023
-
Sanisand 13.1.2023
-
SaniSand Model in Plaxis 3D 9.12.2022
-
The GA-cal software for the automatic calibration of soil constitutive laws 2.12.2022
-
Abaqus OneAPI Compiler 10.11.2022
-
Few more Question on calculating lateral displacement of pile using hypoplastic clay model 3.10.2022
-
A question about the hypoplastic model in clay 22.9.2022
-
A High-Cycle Accumulation Model for Sand (Niemunis et al., 2005) 6.9.2022
-
Malaysian kaolin – Cyclic tests by Charles University 5.9.2022
-
Problem in calculating Lateral displacement of the pile using Hypoplastic clay model 2.9.2022
-
GTS NX 25.7.2022
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.