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compute_smd_tlsph_strain.html
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rLAMMPS lammps
compute_smd_tlsph_strain.html
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<HTML>
<CENTER><A
HREF =
"http://lammps.sandia.gov"
>
LAMMPS WWW Site
</A>
-
<A
HREF =
"Manual.html"
>
LAMMPS Documentation
</A>
-
<A
HREF =
"Section_commands.html#comm"
>
LAMMPS Commands
</A>
</CENTER>
<HR>
<H3>
compute smd/tlsph_strain command
</H3>
<P><B>
Syntax:
</B>
</P>
<PRE>
compute ID group-ID smd/tlsph_strain
</PRE>
<UL><LI>
ID, group-ID are documented in
<A
HREF =
"compute.html"
>
compute
</A>
command
<LI>
smd/tlsph_strain = style name of this compute command
</UL>
<P><B>
Examples:
</B>
</P>
<PRE>
compute 1 all smd/tlsph_strain
</PRE>
<P><B>
Description:
</B>
</P>
<P>
Define a computation that calculates the Green-Lagrange strain tensor for particles interacting via the Total-Lagrangian SPH pair style.
</P>
<P>
See
<A
HREF =
"USER/smd/SMD_LAMMPS_userguide.pdf"
>
this PDF guide
</A>
to using Smooth Mach Dynamics in LAMMPS.
</P>
<P><B>
Output info:
</B>
</P>
<P>
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
<A
HREF =
"Section_howto.html#howto_15"
>
How-to discussions, section 6.15
</A>
for an overview of LAMMPS output options.
</P>
<P>
The per-particle tensor values will be given dimensionless. See
<A
HREF =
"units.html"
>
units
</A>
.
</P>
<P>
The per-particle vector has 6 entries, corresponding to the xx, yy, zz, xy, xz, yz components
of the symmetric strain tensor.
</P>
<P><B>
Restrictions:
</B>
</P>
<P>
This compute is part of the USER-SMD package. It is only enabled if
LAMMPS was built with that package. See the
<A
HREF =
"Section_start.html#start_3"
>
Making LAMMPS
</A>
section for more info.
</P>
<P>
This quantity will be computed only for particles which interact with the Total-Lagrangian SPH pair style.
</P>
<P><B>
Related commands:
</B>
</P>
<P><A
HREF =
"compute_smd_tlsph_strain_rate.html"
>
smd/tlsph_strain_rate
</A>
,
<A
HREF =
"compute_smd_tlsph_stress.html"
>
smd/tlsph_stress
</A>
</P>
<P><B>
Default:
</B>
none
</P>
</HTML>
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