Spatial constraint in a cluster of sphere

Dear users,

I am trying to pack maximum spheres in a given size cube where each sphere has a fixed distance from its neighboring spheres. I would be really grateful if someone could help me, I am new to LAMMPS.

Thank You,
Dushyant

Dear users,

I am trying to pack maximum spheres in a given size cube where each sphere
has a fixed distance from its neighboring spheres.

​this sounds like you want to construct an FCC structure. ​please see the
lattice, region, and create_atoms commands

I would be really grateful if someone could help me, I am new to LAMMPS.

​it is very difficult to help you, because you are asking ​questions
without context and in a way that isn't easy to follow.

axel.