[lammps-users] fix recenter


I'm trying analyze the interaction between 2 polymeric nanofibers that are located at a certain distance from each other. The simulation works fine, but for fibers that are located close to each other, I'm observing a welding-like behavior (fibers move towards each other and merge) as simulation continues.

I want to keep these fibers separated at the initial distance at all times. Can I use "fix/recenter" to fix center of masses of polymer chains that are at the surface? Do you have any other suggestions,

thank you,



That should work. Several of the fixes could be used to keep the
fibers apart. Besides recenter, you might also experiment with
momentum, spring, setforce, etc and see what works best for your