My simulation in lammps to apply external cyclic electric field is prompted: Dump custom fix does not compute per-atom info; how do I solve this problem? Do I need to add any commands? 2 posts - 2 participants Read full topic

Hi, I have some questions about the command “fix spring.” fix 5 bilayer1 spring couple bilayer2 100.0 NULL NULL 10.0 0.0 Does this example mean that the spring acts only in the Z direction? And what does the Z parameter 10 mean? On the LAMMPS page, it says displacement, but I’m not sure. If I simply connect two groups (distance between groups is 20) with a virtual spring with…