LIGGGHTS® - User Forum

Dear community,
I was wondering if it's possible to tell LIGGGHTS to read from an external file that containes coordinates (x,y,z) and velocity components (vx,vy,vz),
so that the particles will experience a force (with "fix add force") that will be dependent on their coordinates. For example, if my particle is located
at (x1, y1, z1) at time t1, LIGGGHTS will check the file for the closest coordinate and the corresponding velocity to act on the particle ?

Hi everybody,
my question is about the model finnie wear. For example, shown in the tutorials referenced wear and my question is about the unit in which it is said wear.
In JPEG, wear range 500, 400, 200, 0 ... what would be the unit?

Best Regards,

Cristian.

Hi, there

After running the conveyor example and obtained a dump4000.conveyor,
I encountered a problem when tried to convert the dump.file to VTK form file,
by typing 'lpp dump4000.conveyor', with an error displayed on screen of terminal on Linux,
"python can't open file 'home/eric/LIGGGHTS/mylpp/src/lpp.py".
Can any one has the same experience and sort it out? thanks.

I have followed the CFDEM installation manual to install the python -numpy, by typing
"sudo apt-get install python-numpy”.

Hi

someone can tell me what dimensions work wear? (for example [mm / year]) please

Regards.

Hello everybody,

Do you know where I can find the download folders in paraview plugin tab? I need the src_reader and src_bin reader. These are not in the download section.

Regards,

David

Hi all,
is it possible to set conductivity through a set property/atom? if not, where should I start coding? is it difficult?

thanks for your attention

Hi,

I am a little bit new LIGGGHTS and am trying to create a simulation of multisphere rigid bodies rotating in a cyllinder. However, after researching I am still very confused as to how the fix rigid command works.

How does one combine particles into a group to be 'fixed rigidly'?

Any help in this matter would be greatly appreciated!

Thanks!
Quincy

Hi All,

Fix rigid/small behaves very differently than fix rigid in v3.0.1. It seems like rigid bodies created by fix rigid/small can exert forces on neighbor particles, but the rigid bodies themselves do not move at all. For some reason, it looks like bodies created by fix rigid/small are not being time integrated. In the source code, the integration schemes look the same... Anyone have the same experience?

FYI, my comm cutoff is large enough, I have tried several comm cutoffs with no change in results.

Thanks,
Zamir

EDIT: Attached a test case

Hi

i like to use a lognormal distribution but the ERROR message says this is currently deactivated
is there a chance to activate this distribution?

thanks

cheers
Jürgen