Hi everyone, I’m trying to simulate a triaxial test by using Matlab, adopting the sand hypoplasticity model with strain softening but so far couldn’t succeed. Would anyone help me with such Matlab m.file. Thanks in advance.
Tags: matlabdriverRelated Articles
-
Question about Interface between UMAT and VUMAT
Hello, I read the research report and the FORTRAN code available at https://soilmodels.com/download/vumat_umatinterface-zip/. It sounds quite interesting but I have a couple of questions about the FORTRAN code: 1- Did […] -
Hypoplastic Interface Model: Virtual Shear Zone Thickness and Surface Rougness Coefficient
Hello, I want to use Hypoplastic Interface (Fric Subroutine) in my ABAQUS contact models. However, I don’t know how I can determine Virtual Shear Zone Thickness. It is the Parameter […] -
Constitutive Model for clayey sand Soils Considering the Effect of Intergranular Physicochemical Forces
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 -
Triaxial Callibration test with Hypoplasticity
Dear all I am trying to calibrate the HP for sand, and I have quite comprehensive data. but they are not totally consistent with each other . we have the […] -
Error: permission to access files denied (Hypoplasticity in PLAXIS)
Hello, I am trying to implement the dll for hypoplasticity in Plaxis 3D. It runs through both the Initial Phase and a Nil Step. However, when it calculates about 20 […] -
Subroutine of SANISAND model
I am trying use sanisand subroutine posted in this website. But it is not working. Getting no values for field variable in the odb. I think i am missing something. […] -
Hypoplastcity sand model
Not able to run the subroutine ……..error is coming ……UMAT: illegal (negative) actual void ratio detected Can anybody help -
Velacs Project Data
Dear colleagues, I want to ask your help — does anyone know where we can find all the test data from the old Velacs Project? If so, that would be […]
Supporting Organisations
Recent posts
-
Calibration Sand Hypoplasticity whit ExCalibre 2.11.2018
-
New book “Modelling of Soil Behaviour of Hypoplasticity” 1.11.2018
-
PhD position at Charles University in Prague: Modelling of THM Bentonite Behaviour for Nuclear Waste Repositories 1.11.2018
-
PhD position at Charles University in Prague: Modelling of Slope Stability using Hypoplastic Model 1.11.2018
-
multi yield surface model 28.10.2018
Hi Ala,
You did not give us enough information on what you need.
So you try to build your own element test driver in matlab with hypoplasticity, right?
We do not know whether
(you have functional driver, but you have problem in hypoplasticity implementation)
OR
(you have functional driver and hypoplasticity implementation, but triaxial test simulation does not work)
OR
(you have nothing)
Let us know,
David
Thank you dear David for your prompt response. Yes, I’m trying to build a Matlab m file implementing the hypoplasticity constitutive relation to simulate an element triaxial test but I’m not professional neither in Matlab or in Hypoplasticity. My problem is the implementation the hypoplasticity tensorial equations in Matlab, especially when strain softening is considered. I am looking for a sample m.file in this respect.
I see,
So please check the following driver:
https://soilmodels.com/download/matlab-driver/
Regards David
Dear David, I’m afraid that the link you sent doesn’t work!! I received the following message when I tried to download:
“Sorry! Download is not available yet.”
Best regards.
Ala
I see, it should be OK now.
Thank you so much dear David, I’ll try to figure out what is going on, although it is not (simple), at least for me!!
Best regards.