Where can I find the source of the content in the picture below in the UMAT subroutine check_parms_DM of the SANISAND constitutive model?
Related Articles
-
Question on the Matlab driver-hypoplastic models
Dear all, After carefully reading the matlab drivers of hypoplastic models, I was wondering whether the driver can simulate triaxial extension tests. As I change the constraints to reflect triaxial […] -
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 […] -
-
How can I solve the error in Abaqus mentioned below?
I am using SANISAND to simulate a triaxial compression test under monotonic loading. But every time my simulations break and give the same message “Abaqus/Implicit Packager exited with an error […] -
K0 determination Reloading using HP clay model
Hi Prof. Masin , It is related to my previous post. Sorry to bother you again. I simulated Oedometer test in Plaxis as well as centrifuge reloading (using HP clay […] -
Animating Soil Models – eLearning Project
Dear all, I am currently writing a proposal for a (small & hopefully nice) eLearning project: Within the project, I would like to create animations related to constitutive modelling. I […] -
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 […] -
UMAT Code for Clay Hypoplasticity
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 oedometeric test model in Abaqus2018 and applied the umat code […]
Supporting Organisations
Recent posts
-
Presentations from Prague Geotechnical Days 2023 including 29th Prague Geotechical Lecture by Yannis Dafalias 25.5.2023
-
Problem in using Hypoplastic model for sand in Abaqus. 17.5.2023
-
An error in the SANISAND umat runtime 8.5.2023
-
Htypoplastic Model in Miidas GTS NX 25.4.2023
-
set cavitation limit in ABAQUS/STANDARD when using SANISAND umat 2.4.2023
-
FE formulation and software 25.3.2023
-
Multi-objective analysis of the Sand Hypoplasticity model calibration 24.3.2023
-
Problem with SANISAND UMAT 7.3.2023
-
Prague Geotechnical Days 2023 (22nd – 23rd of May) with Prague Geotechnical Lecture by prof. Yannis Dafalias 28.2.2023
-
What is an appropriate damping model for dynamic liquefaction analysis of tailings storage facility in FLAC? 10.2.2023
-
Abaqus vs Plaxis – Local Convergence Tolerances 2.2.2023
-
Zbraslav sand – Cyclic tests by Charles University 17.1.2023
Hi Meng, it is here: https://soilmodels.com/download/plaxis-umat-sanisand/ in file implementation/umat.for. David
thank you very much!,but my meaning is that where can I find related literature about explainning the formula of the above code.
I think this is simple switch allowing to define friction angle directly in degrees, or as M=q/p at failure. If below 5, the algorithm assumes that you entered M, if above 5 , the algorithm assumes you entered friction angle in degrees. This is just a technicality about how to input parameters, I do not think there is in any literature for it. David