"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c

:link(lws,http://lammps.sandia.gov)
:link(ld,Manual.html)
:link(lc,Section_commands.html#comm)

:line

compute smd/ulsph_strain_rate command :h3

[Syntax:]

compute ID group-ID smd/ulsph_strain_rate :pre

ID, group-ID are documented in "compute"_compute.html command
smd/ulsph_strain_rate = style name of this compute command :ul

[Examples:]

compute 1 all smd/ulsph_strain_rate :pre

[Description:]

Define a computation that outputs the rate of the logarithmic strain tensor
for particles interacting via the updated Lagrangian SPH pair style.

See "this PDF guide"_USER/smd/SMD_LAMMPS_userguide.pdf to using Smooth Mach Dynamics in LAMMPS.

[Output info:]

This compute calculates a per-particle vector of vectors (tensors), which
can be accessed by any command that uses per-particle values from a compute
as input. See "Section_howto 15"_Section_howto.html#howto_15 for an overview of
LAMMPS output options.

The values will be given in "units"_units.html of one over time.

The per-particle vector has 6 entries, corresponding to the xx, yy, zz, xy, xz, yz components
of the symmetric strain rate tensor.

[Restrictions:]

This compute is part of the USER-SMD package.  It is only enabled if
LAMMPS was built with that package. See the "Making LAMMPS"_Section_start.html#start_2
section for more info. This compute can only be used for particles which interact with the updated Lagrangian SPH pair style.


[Related commands:]

smd/utsph_strain_rate

[Default:] none
