LIGGGHTS® - User Forum

LIGGGHTS® related topics can be discussed here: discussion about models, installation, feature requests and general discussion

Dumping Ellipsoid Data

Submitted by cTop89 on Wed, 04/16/2014 - 22:19

I've built LIGGGHTS with the ASPHERE package and was able to generate an ellipsoid particle, but I'm struggling to find how to use a dump command to output data like the shape diameters and the quaternion to define orientation. I'm using "atom_style hybird granular ellipsoid"

Any help anyone could provide would be appreciated, thank you.

weird result: particle discharging from a hopper

Submitted by ZYan on Tue, 04/15/2014 - 15:43

Hi guys,
I am working on the simulation of discharging of particles from a flat bottom hopper. When the discharging is completed, there are one layer of particle sticking to the cylindrical walls. (please see the attached figure). I also attached the meterial properties that i used. Does some one work on similar topics and know the problem? Thank you.

back after absence - new website; missing parts?

Submitted by msandli on Thu, 04/10/2014 - 04:41

Please move to appropriate forum section if needed.

This is the first time I've visited the site in several months, and while the new design looks good, it appears that many of the links are missing/broken? None of the "LIGGGHTS features" links have any pictures associated with them, and I can't find any of the downloads.

Am I missing something?

How to fix skewed element , moving mesh will not parallelize well?

Submitted by AJ.Spin on Mon, 04/07/2014 - 16:24

Hello,

I have an issue where particles are breaking through my mesh. I believe my moving mesh is pushing/ squeezing particles into the stationary mesh. I understand that there could be many reasons that cause this issue but I think it has to do with the warning: "WARNING: Fix mesh: Mesh contains highly skewed element, moving mesh (if used) will not parallelize well (../surface_mesh_I.h:484)".

Can't access granular components in LIGGHTS3.0

Submitted by jjohnfuller on Fri, 04/04/2014 - 16:46

Hi There

Have LIGGGHTS installed on MAC Mavericks and it compiles with the RIGID module only correctly

However many packages I include I cannot see any of the pair styles for granular work - e.g. pair style gran hooke etc

I have reinstalled a number of times and can compile OK and it runs, but can never access these functions

Am I missing something obvious here ??

What are the minimum packages required for Granular modelling

Any help much appreciated

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