<p>Define a computation that calculates the per-atom plasticity for each
atom in a group. This is a quantity relevant for <a class="reference internal" href="pair_peri.html"><span class="doc">Peridynamics models</span></a>. See <a class="reference external" href="PDF/PDLammps_overview.pdf">this document</a>
for an overview of LAMMPS commands for Peridynamics modeling.</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 class="reference internal" href="#mitchell"><span class="std std-ref">(Mitchell)</span></a> and the PDF doc included in the LAMMPS
distro in <a class="reference external" href="PDF/PDLammps_EPS.pdf">doc/PDF/PDLammps_EPS.pdf</a>.</p>
<p>This command can be invoked for one of the Peridynamic <a class="reference internal" href="pair_peri.html"><span class="doc">pair styles</span></a>: peri/eps.</p>
<p>The plasticity value will be 0.0 for atoms not in the specified
compute group.</p>
<p><strong>Output info:</strong></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>
</div>
<div class="section" id="restrictions">
<h2>Restrictions</h2>
<p>This compute is part of the PERI package. It is only enabled if
LAMMPS was built with that package. See the <a class="reference internal" href="Section_start.html#start-3"><span class="std std-ref">Making LAMMPS</span></a> section for more info.</p>
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