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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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