LIGGGHTS® - User Forum

hello every one ....

If I want to refer to the x direction normal stress at time increment 1 as the variable, sx. How can I accomplish this?

My goal is to set up a conditional statement so that if sx>1000, then something else applies.

Hi, all

I want to modelling particle crushing in LIGGGHTS using replacement method. I have no idea how to create a group of atoms given their coordinates after deleting their corresponding mother atoms. The atoms could be created one by one, but it seems time consuming.

Many thanks in advance,

Su

I am using LIGGGHTS for radial segregation problem in rotating drum. I took examples of the scripts available in the LIGGGHTS tutorials and other places but I am not able to execute the segregation problem.
It would be very helpful if somebody expert in the field could provide me an example script for segregation problem in rotating drum. Thank you.

Hi,

I'm new to DEM simulation using LIGGGHTS and I've got to simulate a transfer chute with conveyor belt. Using the "Conveyor" tutorial in the LIGGGHTS examples folder I have been able to set up my own simulation succesfully.

However, as I reviewed the results in ParaView I saw that the velocity of the particles in the conveyor belt was actually different to that of the conveyor belt itself. As soon as I detected this I decided to re-run the "Conveyor" tutorial and check the particle velocity against the conveyor belt and, as it turns out, they were also different.

Hello
I am executing the tutorial example problems and viewing simulation results in Paraview, but I am not understanding how to analyse and draw the conslusions from those results.

Hi all,
Does someone know how model the movement of a planetary ball mill in the LIGGGHTS script? The pot is doing a rotational / translation motion.

thanks a lot

Hi everybody,

The visualisation of force chain networks is a great thing.
According to the release notes, the above mentioned dump commands were included into liggghts 3.4. I installed L 3.4.1.

But when i use them, i always get the message that those are invalid dump styles. I am wondering if someone can give me a hint what is wrong.

Is there more information regarding this new addition?

I have been using the dump2force python script for force-chain visualisation, but it has some drawbacks.

A quick example for the new functionality would be great.

Cheers,
-A

Hello all,

Heat transfer between two particles is calculated by fix heat/gran

If i want to know how the heat transfer does in liggghts, which cpp should i see ?

Could you give me some advices?