Hi all,
I use the version 1.2.5 and I have this warning when spheres are in contact with triangular facets:
WARNING: Dangerous build in triangle neighbor list.
Please, can you give more information about this error message ?
Moreover, please can you indicate me the function where the neighbor list between spheres and facets is built. I use the function fix_wall_gran_hertz_history
Regards
JF
Ps: Do you think that the sphere-facet contact implemented into LIGGGHTS is enough precise to solve problem where spheres go in contact with a pyramid (e.g., as proposed by Martin Koester on the forum: Whats wrong with my mesh/gran simulation). ?
ckloss | Wed, 03/16/2011 - 12:46
Hi JF, all this is done in
Hi JF,
all this is done in fix_tri_neighlist.h/cpp. Unfortunately a (severe) bug slipped in there in the current -dev version. Will be fixed in the upcoming release next week! If you have fix_tri_neighlist.h/cpp from 2 or 3 versions before, feel free to try to replace it with that
>>is enough precise to solve problem where spheres go in contact with a pyramid
Yes I think so. There will be some precision improvement for the case where the triangles are considerably smaller than the spheres, but for any other case it should work fine (as soon as the bug is fixed).
Christoph
JF | Wed, 03/16/2011 - 13:51
Hi Christoph, Thank you
Hi Christoph,
Thank you for your reply and these good news. I will look at the fix_tri_neighlist.h/cpp file to understand how this part of LIGGGHTS works.
You can watch via this link what I am simulating:
http://www.youtube.com/watch?v=NjmZR3UUgm8
Regards
JF
ckloss | Wed, 03/16/2011 - 17:59
Looks cool :-) If you want
Looks cool :-) If you want that be put on the website with attribution to you, let me know.
Christoph
JF | Thu, 03/17/2011 - 08:10
Thank you Christoph for your
Thank you Christoph for your proposition, I hope to send you soon the same movie with wear particles detached from the contact interface.
Regards
JF