Dear LAMMPSers:

I have some questions while using LAMMPS.

At the beginning, I want to say that in my input script , there is a line of

"units metal"

as we all know:

For style metal, these are the units:

* distance = Angstroms

* time = picoseconds

* mass = grams/mole

* velocity = Angstroms/picosecond

* force = eV/Angstrom

... ...

In the web page below:

http://lammps.sandia.gov/doc/compute_stress_atom.html

In that following formula, Sab is the sum of 3 terms: m*v*v, r_ij*Fp,

R_ij*Fb

In my opinion, the unit of term:"m*v*v" is the same with "r_ij*Fp", both are

"eV"

But the unit of mass for style metal is "grams/mole".

How can we get "eV" for "m*v*v".

If this assume is incorrect, what the right one should be ?

Thanks for any reply!

Fengchao Wang