I am trying to use LIGGGHTS to model bricks in a masonry structure. I am using the superquadric particle template with blockiness parameters of 4.0 and axes lengths of half length, height, and width. This works fine for regular walls where bricks have a parallel arrangement.
However, I would like to be able to model arches and other curved structures, as well. In these cases, the super quadric needs to be inserted at an angle. I do not see a way to do this in the documentation (linked below). Does LIGGGHTS support this functionality?
https://www.cfdem.com/media/DEM/docu/fix_particletemplate_superquadric.h...
medvedeg | Wed, 06/20/2018 - 11:50
Hi,
Hi,
what do you mean by insertion at an angle?
Insertion is controlled by fix_insert* commands, as for example
https://www.cfdem.com/media/DEM/docu/fix_insert_pack.html
Alternatively you can insert particles one by one using "creat_atoms" and "set" commands
mhallee | Fri, 07/20/2018 - 21:00
Resolved [thank you!]
This "set" command is exactly what I was looking for! Thank you! I was using the create_atoms. Being a new LIGGGHTS user, I was unsure how to define additional options.
mschramm | Wed, 06/20/2018 - 15:20
Outside tool
Hello,
I do not believe LIGGGHTS will be able to do this for you by itself.
I would suggest using python (or another software) to generate an input file
that contains the positions and quaternion information, then have LIGGGHTS
read this file in. I have had very good results with this method to build
complex shapes in LIGGGHTS.
https://www.cfdem.com/media/DEM/docu/read_data.html