This directory has input scripts which demonstrate how to use the replicate command both for systems with and without periodic bond loops. A periodic bond loop is where a chain of bonds spans a periodic dimension of the box and includes one or more bonds which cross the periodic boundary to close the loop. To run these scripts, LAMMPS should be built with the MOLECULE and CLASS2 packages. The latter is only needed for the CNT example. These scripts are tiny examples which illustrate both kinds of systems. Each produces a series of images which can be visualized. If the 3 lines for a dump movie command are uncommented, a MPG movie is produced, assuming LAMMPS is build with FFMPEG support. in.replicate.bond.x # linear chains in x direction, bond loop in x in.replcate.bond.x.y # 2d grid of bonded atoms, bond loops in x and y in.replicate.bond.xy # linear chains in diagonal direction, bond loop in x and y in.replicate.bond.noloop # linear chains in x direction, no bond loop This script is for a complex system of 3 orthogonal CNTs which has periodic bond loops in all 3 dimensions xyz. in.replicate.cnt