LIGGGHTS® - User Forum

Hello,
I installed LIGGGHTS WITH BONDS and I have problem with the visualization of the example.
I found program bondsfalloncone and I ran in.template.
https://github.com/Polyun/LIGGGHTS-PUBLIC/tree/master/bondspackage/bonds...

In this program, parameters are write to output file by command:
dump dmp all custom 250 post/dump*.bondcone id type type x y z ix iy iz vx vy vz fx fy fz omegax omegay omegaz radius

Hello,
Can anyone tell me how to get the elastic potential energy due to the particle-wall contact. pe/atom or pe gives only gravitational potential energy. (RESTRICTION: This compute does not include the potential energy due to the overlap of granular particles.).
There is an option 'computeElasticPotential' as a keyword for the hertz contact which saves the elastic potential energy, but I don't know how to use the saved value.
My wall is not a primitive wall it is a mesh.
Can anyone guide me through the procedure?
Thanks in advance.

Hello Liggghters,

I am trying to understand the physics behind the tutorial of Hydrogel_multicontact but while lunch it give me the following error attached in the log file below how do I make work ??

Salutations,

Dear all,
I want to simulate a case in which a gate move up. I used move mesh command.
However, the mesh did not move.

#Multisphere

atom_style sphere
atom_modify map array sort 0 0
boundary f f f
newton off

communicate single vel yes

#PUBLIC version only supports serial execution
processors 1 1 1

units si

region reg block -0.5 0.3 -0.2 0.2 0. 0.5 units box
create_box 1 reg

neighbor 0.004 bin
neigh_modify delay 0

#Material properties required for new pair styles

Hi all,

I am simulating a 3D geometry, but in the end I would like to visualize results in only a section on the geometry.
e.g. I have a cylinder with particles in in, I want to visualize a plane in the centre of the cylinder. Is there is a way this can be done in LIGGGHTS + paraview?

Thanks a lot.

Regards,
Satyajeet

Hi,

Can anyone tell whether the glyph to visualize superquadric particles from LIGGGHTS has been released or available? Any response will be greatly appreciated.

Thanks,
Sounik

Dear users
I try to make LIGGHTS-2.4.4 and OPENFOAM-2.1.1. I got:
ne.
In myCFDEM folder there is LIGHHHTs-2.4.4 and i try to install it but i receive some error affter using this commands:

“make fedora_fpic”
grep: angle_*.h: No such file or directory
grep: dihedral_*.h: No such file or directory
grep: improper_*.h: No such file or directory
.
.
.
.

“make makelib”
grep: angle_*.h: No such file or directory
grep: dihedral_*.h: No such file or directory
grep: improper_*.h: No such file or directory

Dear all,

I have a problem with Paraview and hope you help me.
When I use Paraview to show the LIGGGHTS results, at the end it shows the results of the previous simulation.
How can I fix it?
Thank you

Dear all,
I am confused with this error and need your help.
ERROR: Fix particletemplate/multisphere (id pts1): Volume expectancy too small. Change 'volume_limit' if you are sure you know what you're doing
what should I do for this error?
this is my code:
#Multisphere

atom_style sphere
atom_modify map array sort 0 0
boundary f f f
newton off

communicate single vel yes

#PUBLIC version only supports serial execution
processors 1 1 1

units si

Dear all,
I need your help.
I faced with this error and I do not know why this error appear?
ERROR: Illegal region block command (/build/liggghts-QCz4in/liggghts-3.3.1+repack1/src/region_block.cpp:114)
this is my code:
#Multisphere

atom_style sphere
atom_modify map array sort 0 0
boundary f f f
newton off

communicate single vel yes

#PUBLIC version only supports serial execution
processors 1 1 1

units si

region reg block -0.35 0.35 -0.075 0.075 0.15 -0.15 units box
create_box 1 reg