Hello dear lammps user,
i have a question about moving a silicon cluster in the Z direction.
the sphere cluster is located on the top of a nanosheet.
in the location of the cluster, i defined a group :
region cluster block 40 60 40 60 40 60 units box
group cluster region cluster
then i used this commands to move the cluster in z direction:
velocity group-id set vx vy vz unit force
velocity cluster set 0.0 0.0 ${LR} units box
fix id group-id setforce fx fy fz
fix 005 cluster setforce 0.0 0.0 NULL
where LR is the value of the velocity
But it didnt move at all. then i tried to do this with fix move command.
fix clusterMoving cluster move linear NULL NULL -${LR} units box
but it still doesn’t move. May i ask what is the problem? Thank you very much
Kind regards,
Rouzbeh