[lammps-users] fix freeze

Dear all,

How can I prevent the position and orientation of ellipse from moving? I just found “fix freeze” which only can be applied on granular particle. Also How can I do that for LJ particles?


Fix freeze doesn't require granular, just that atoms have torque,
as it zeroes both force and torque. If you just want to zero
force, use fix setforce. You should also set their velocity to 0.