Hello Lammps users

Can some body guide me hw to use fix restrain command? I mean what value Kstart Kstop is to be used? And can I use it on a group created using create_atoms box command? Or I will have to create atoms using single atom command?



You can create groups of atoms in various ways - see the group command.

As for Kstart/stop the typical usage is ramp up the spring constant

over time to tighten the restraint. You’ll have to experiment with

good values for your model.