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rLAMMPS lammps
compute_damage_atom.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 damage/atom command
</H3>
<P><B>
Syntax:
</B>
</P>
<PRE>
compute ID group-ID damage/atom
</PRE>
<UL><LI>
ID, group-ID are documented in
<A
HREF =
"compute.html"
>
compute
</A>
command
<LI>
damage/atom = style name of this compute command
</UL>
<P><B>
Examples:
</B>
</P>
<PRE>
compute 1 all damage/atom
</PRE>
<P><B>
Description:
</B>
</P>
<P>
Define a computation that calculates the per-atom damage for each atom
in a group. This is a quantity relevant for
<A
HREF =
"pair_peri.html"
>
Peridynamics
models
</A>
. See
<A
HREF =
"PDF/PDLammps_overview.pdf"
>
this document
</A>
for an overview of LAMMPS commands for Peridynamics modeling.
</P>
<P>
The "damage" of a Peridymaics particles is based on the bond breakage
between the particle and its neighbors. If all the bonds are broken
the particle is considered to be fully damaged.
</P>
<P>
See the
<A
HREF =
"http://www.sandia.gov/~mlparks/papers/PDLAMMPS.pdf"
>
PDLAMMPS user
guide
</A>
for a formal
definition of "damage" and more details about Peridynamics as it is
implemented in LAMMPS.
</P>
<P>
This command can be used with all the Peridynamic pair styles.
</P>
<P>
The damage value will be 0.0 for atoms not in the specified compute
group.
</P>
<P><B>
Output info:
</B>
</P>
<P>
This compute calculates a per-atom vector, which can be accessed by
any command that uses per-atom values from a compute as input. See
<A
HREF =
"Section_howto.html#howto_15"
>
Section_howto 15
</A>
for an overview of
LAMMPS output options.
</P>
<P>
The per-atom vector values are unitlesss numbers (damage) >= 0.0.
</P>
<P><B>
Restrictions:
</B>
</P>
<P>
This compute is part of the PERI 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><B>
Related commands:
</B>
</P>
<P><A
HREF =
"compute_dilatation.html"
>
compute dilatation
</A>
,
<A
HREF =
"compute_plasticity.html"
>
compute
plasticity
</A>
</P>
<P><B>
Default:
</B>
none
</P>
</HTML>
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