Hello lammps use,
anyone knows how to exclude the constraint force contribution of rigid
body in the calculation of the internal pressure.
Thanks you.
Best
Samuel
Hello lammps use,
anyone knows how to exclude the constraint force contribution of rigid
body in the calculation of the internal pressure.
Thanks you.
Best
Samuel
Hello lammps use,
anyone knows how to exclude the constraint force contribution of rigid
body in the calculation of the internal pressure.
you can turn off the (non-bonded) force computation inside the rigid
bodies with "neigh_modify exclude". bonds etc. will have to be turned
off explicitly.
axel.
If you are asking about the constraint forces, I assume
you mean the virial term that fix rigid computes internally
due to the forces added to keep the body rigid.
It is part of the total pressure by default. If you want to exclude
it from the pressure calculation, then see the doc
page for the compute pressure command and the “fix”
keyword option which you can include or exclude. In this
case, that is what fix rigid is calculating.
Steve