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rLAMMPS lammps
compute_plasticity.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 plasticity/atom command
</H3>
<P><B>
Syntax:
</B>
</P>
<PRE>
compute ID group-ID plasticity/atom
</PRE>
<UL><LI>
ID, group-ID are documented in compute command
<LI>
plasticity/atom = style name of this compute command
</UL>
<P><B>
Examples:
</B>
</P>
<PRE>
compute 1 all plasticity/atom
</PRE>
<P><B>
Description:
</B>
</P>
<P>
Define a computation that calculates the per-atom plasticity for each
atom in a group. This is a quantity relevant for
<A
HREF =
"pair_peri.html"
>
Peridynamics
models
</A>
.
</P>
<P>
The plasticity for a Peridynamic particle is the so-called consistency
parameter (lambda). For elastic deformation lambda = 0, otherwise
lambda > 0 for plastic deformation. For details, see
<A
HREF =
"#Mitchell"
>
(Mitchell)
</A>
and the PDF doc included in the LAMMPS
distro in
<A
HREF =
"PDF/PDLammps_EPS.pdf"
>
doc/PDF/PDLammps_EPS.pdf
</A>
.
</P>
<P>
This command can be invoked for one of the Peridynamic
<A
HREF =
"pair_peri.html"
>
pair
styles
</A>
: peri/eps.
</P>
<P>
The plasticity 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
Section_howto 15 for an overview of LAMMPS output options.
</P>
<P>
The per-atom vector values are unitlesss numbers (lambda) >= 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_damage.html"
>
compute damage
</A>
,
<A
HREF =
"compute_dilatation.html"
>
compute
dilatation
</A>
</P>
<P><B>
Default:
</B>
none
</P>
<HR>
<A
NAME =
"Mitchell"
></A>
<P><B>
(Mitchell)
</B>
Mitchell, "A non-local, ordinary-state-based
viscoelasticity model for peridynamics", Sandia National Lab Report,
8064:1-28 (2011).
</P>
</HTML>
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