Beam bending

Hi all,
I just need suggestions on using lammps to apply bending on a beam. So I thought about fixing a group of atoms at one end (cantilever case) then on the other end I can group some if the atoms and apply rotation or a fixed velocity in the vertical direction! So i have to use fix move (linear or rotate). Are there any other ideas for this case? Thanks
Mohamed

You can just add a force to the atoms on the free end.

See fix addforce.

Steve