LIGGGHTS for bonded material

Submitted by Rahul Kumar on Wed, 02/17/2021 - 06:17

Hi

I want to simulate bonded granular material. But LIGGGHTS-public version 3.8 does not support bonded contact. Is there any way by which I can use LIGGGHTS-public version 3.8 for simulating bonded material

Forums:

mschramm | Wed, 02/17/2021 - 23:21

Hello,
If you are needing to use the custom/vtk command to print vtk files, there is nothing in the code that will stop you from doing so.
The reason that I do not use the vtk file extension is that I have custom input file readers for python and matlab.

Rahul Kumar | Thu, 02/25/2021 - 11:15

Is there any tutorial script for triaxial test of bonded contact with LIGGGHTS version 3.8

mschramm | Thu, 02/25/2021 - 18:41

Hello,
I do not have any simulations that deal with the triaxial test. My lab has not needed to do this so I have not done it.
Many people on the forum ask for a triaxial test and I wish that one would be posted for everyone to use.
Sorry that I cannot be more helpful in this area.

kardous | Thu, 02/25/2021 - 19:49

Hello,
Is there any tutorial script for rotating drum with LIGGGHTS please?

thank you
Sabrine

mschramm | Thu, 02/25/2021 - 21:32

Hello,
I do not have a rotating drum tutorial.
However, I have used the following for some cohesion testing that I did.
https://github.com/rbberger/LIGGGHTS-PUBLIC/tree/openmp_parallelization/...

The changes needed are to use the correct template and to use insert/pack (see the bond chute wear example)
https://github.com/schrummy14/LIGGGHTS_Flexible_Fibers/blob/master/examp...

Rahul Kumar | Tue, 03/02/2021 - 06:30

Hi mschramm

I tried to complie LIGGGHTS from the link you gave. But I am getting this error.
https://github.com/schrummy14/LIGGGHTS_Flexible_Fibers

-----------------------------------ERROR----------------------------------------------------------------------------------------------------------------------
make[1]: Entering directory '/home/mslab/LIGGGHTS_Flexible_Fibers-master/src/Obj_auto'
'Could not compile VTK example. As AUTOINSTALL_VTK is set to "ON". VTK will now be automatically downloaded to ../../lib'
VTK has been downloaded and will be compiled now. This can take several minutes.
Makefile:803: *** 'Compilation of vtk failed. Please install it manually'. Stop.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------

Any suggestion to remove this error.

mschramm | Tue, 03/02/2021 - 16:21

Hello,
That error states that the LIGGGHTS' auto makefile was unable to find the vtk library you have installed.
I saw this quite a bit when I first upgraded my Redhat machine. Do you have the vtk libs installed and if so, which version?

I have been using vtk-8 on my Ubuntu 20.04, Redhat 7, and Cent Os 7 builds so I have to have the following in my Makefile.user file.

# Path that contains the includes (vtkVersion.h)
VTK_INC_USR=-I/home/mschramm/Programs/LIGGGHTS-PUBLIC/lib/vtk/install/include/vtk-8.0
# Path that contains the VTK libraries
VTK_LIB_USR=-L/home/mschramm/Programs/LIGGGHTS-PUBLIC/lib/vtk/install/lib