LIGGGHTS® - User Forum

Hi,
I am trying to perform a simulation with the pair style "hybrid/overlay" combining "hertz/stiffness" with "lj/cut" (see attached script)
However, the simulation crashes as soon as a particle touches a wall (this happens at timestep ~9400 in my simulation).
Does anybody have an idea what I am doing wrong in the script?
Note: The simulation runs fine if one removes the walls!
Thanks in advance!
Best
Eric

Hi all,
I am a new user of LIGGGHTS. I just could install it yesterday. righ now I am studying this program from examples.
My intention of using this program is to simulate dust sucking or powder sucking process from tray using some nozzle which can be moved above tray. I want to know whether this program can do it or not. Which topic or command should I focus on?
The example of the process is:
http://www.youtube.com/watch?v=pCB4zkhuKIU&feature=youtu.be
Thanks,
Krisda

A first time user. Encountered the following compiling problem:
--------------------------
>make serial
make[1]: Entering directory `/home/LIGGGHTS/src/Obj_serial'
g++ -O -DLAMMPS_GZIP -I../STUBS -I/usr/local/include/voro++ -c ../fix_tune_kspace.cpp
../fix_tune_kspace.cpp: In member function ‘void LAMMPS_NS::FixTuneKspace::update_pair_style(char*, double)’:
../fix_tune_kspace.cpp:238:48: error: no matching function for call to ‘LAMMPS_NS::Force::create_pair(char*&, char*&)’
../fix_tune_kspace.cpp:238:48: note: candidate is:

Hej guys,

i need for my further calculation the exact forces that take effect on my mesh cause by the granular.

I use the "dump mesh/vtk face stresscomponents" and get dumpfiles like this example:

>>> ...
CELL_DATA 168
VECTORS stress float
9960.909201 -132.616586 -27273.516696
0.000000 0.000000 0.000000
0.000000 0.000000 0.000000
-24516.993439 -42.767019 -5969.508000
-6635.700348 130.843939 -2145.554848
-4538.977929 415.493448 -1099.923739
... <<<

Hi all,

i'm trying to reproduce a rotary kiln with two different form of particles, rectangular and spherical,
my problem is that when I try to change the neighbor from nsq to bin it gives me a segmentation fault,
I've saw that the problem is probably related to the neighbor bin, which I have to select when I add triangular meshes. Someone knows how to solve this?

Regards,

Hi,

an updated tutorial for Ubuntu, Mint and other Debian based distributions. Since MPI support didn't work the old way and I don't need it at the moment, I left it, maybe someone can post the solution. I integrate jpg and png support for image dump, since I do animations in ParaView. I updated the Syntax-Highlighting for gedit by Philippe Seil for LIGGGHTS 3.0. The file is detached, his original post not longer on-line anymore.
It would be fine, if you give feedback and recommendations.

Regards,
Paul

Hi all,

i have to simulate the breakage behavior of rectangular particles, and i was asking myself if this is possible with fix rigid and fix bond/break

Best regards,

Hi Christophe,
I am a new user of LIGGGHTS. I have two questions for you.
Is the corrected version of Fix command (that takes the overlaps into account) in the public version?

Where can i find the full list showing which feature is in public version and which is not?

thanks,

Zilin

Hi everybody,

Hi guys.

I met a problem when I was compiling LIGGGHTS on my PC(i5-3470, memory 4G ). After checking the settings with "cfdemSysTest", I began "cfdemCompLIG", it went smoothly at first, but when compiling certain **.cpp file, the screen was frozen. After long time(about 20 minutes), this situation stopped and the compling process went on, but there was no lmp_fedora_fpic in the src directory after the compiling process finished. Does anyone meet the same problem? Is that because the hardware of my PC too low?