LIGGGHTS® - User Forum

Hi!

Is it possible to fix the position of a few atoms, i.e. the atoms should not move even when the other atoms hit them. so, in a sense the atoms behave as walls but are not continuous?

Regards,
Tamoghna

Hello,

I have an issue where particles are breaking through my mesh. I believe my moving mesh is pushing/ squeezing particles into the stationary mesh. I understand that there could be many reasons that cause this issue but I think it has to do with the warning: "WARNING: Fix mesh: Mesh contains highly skewed element, moving mesh (if used) will not parallelize well (../surface_mesh_I.h:484)".

read_data add seems to be not working in version 3.0.0 :( GIving an error of illegal read_data command.

Hi There

Have LIGGGHTS installed on MAC Mavericks and it compiles with the RIGID module only correctly

However many packages I include I cannot see any of the pair styles for granular work - e.g. pair style gran hooke etc

I have reinstalled a number of times and can compile OK and it runs, but can never access these functions

Am I missing something obvious here ??

What are the minimum packages required for Granular modelling

Any help much appreciated

Hi all,

I want to simulate the heat transport inside an isotropic aggregate, so the conductivity coefficient change as a function of direction too, my idea was to use an aggregate particle formed by 4 atom type and to set conductivity coefficient for each particle 4 different coefficient,
is that possible?

Hello everyone,

Now, I tested the conductive heat transfer between particles with stl surface with an older version 2.3.2. The desired quantity I want to obtain is the heat flux transfered from an element of the mesh, in the same way as the wear quantity.
When digging into the code detail, I noted that there is a command 'compute wall/gran/local' evaluting this quantity.

Hello!!

I have the following error when running an example:

LIGGGHTS-PUBLIC/examples/LIGGGHTS/Tutorials_public/chute_wear

LIGGGHTS 1.5 based on lammps-10Mar10
Created orthogonal box = (-0.5 -0.2 -0.4) to (0.1 0.2 0.15)
1 by 1 by 1 processor grid
ERROR: Invalid pair style

help me please!!!

Thanks!

Hi everyone!

I was wondering if it is somehow possible to define a region, introduce particles on it through the command create atoms and insert them to another region.
For example, create a cylinder full of particles, creating a pack, and drop it to a surface. Is that possible or the closest option is using the insert/pack command?

Thanks in advance!

hi,
I am new user on liggghts. could anyone please help me on how to access on liggghts and connect to paraview.

Thank you.

Umesh

Hi everybody,

when setting up a computation, I am using the fix rigid command in order to generate L-shaped multi-sphere clumps.

My problem is that some of the clumps pentrate the CAD mesh and get stuck in the wall (cf. attachment). Does anyone know how what the problem could be?

Best regards,
MiRa