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compute bond command
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compute bond command
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<div
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<span
id=
"index-0"
></span><h1>
compute bond command
<a
class=
"headerlink"
href=
"#compute-bond-command"
title=
"Permalink to this headline"
>
¶
</a></h1>
<div
class=
"section"
id=
"syntax"
>
<h2>
Syntax
<a
class=
"headerlink"
href=
"#syntax"
title=
"Permalink to this headline"
>
¶
</a></h2>
<div
class=
"highlight-python"
><div
class=
"highlight"
><pre>
compute ID group-ID bond bstyle
</pre></div>
</div>
<ul
class=
"simple"
>
<li>
ID, group-ID are documented in
<a
class=
"reference internal"
href=
"compute.html"
><em>
compute
</em></a>
command
</li>
<li>
bond = style name of this compute command
</li>
<li>
bstyle = style name of a bond style that calculates additional values
</li>
</ul>
</div>
<div
class=
"section"
id=
"examples"
>
<h2>
Examples
<a
class=
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href=
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title=
"Permalink to this headline"
>
¶
</a></h2>
<div
class=
"highlight-python"
><div
class=
"highlight"
><pre>
compute 1 all bond harmonic
compute 2 all bond morse
</pre></div>
</div>
</div>
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class=
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id=
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>
<h2>
Description
<a
class=
"headerlink"
href=
"#description"
title=
"Permalink to this headline"
>
¶
</a></h2>
<p>
Define a computation that extracts additional values calculated by a
bond style, sums them across processors, and makes them accessible for
output or further processing by other commands. The group specified
for this command is ignored.
</p>
<p>
The specified
<em>
bstyle
</em>
must be a bond style used in your simulation
either by itself or as a sub-style in a
<a
class=
"reference internal"
href=
"bond_hybrid.html"
><em>
bond_style hybrid
</em></a>
command.
</p>
<p>
This compute is useful when using
<a
class=
"reference internal"
href=
"bond_hybrid.html"
><em>
bond_style hybrid
</em></a>
if you want to know the portion of the total energy contributed by one
sub-style.
</p>
<p><strong>
Output info:
</strong></p>
<p>
This compute calculates a global scalar which is the contribution of
the named bond style to the bond energy
<em>
ebond
</em>
.
</p>
<p>
The scalar value calculated by this compute is
“
extensive
”
and will be
in energy
<a
class=
"reference internal"
href=
"units.html"
><em>
units
</em></a>
.
</p>
</div>
<div
class=
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id=
"restrictions"
>
<h2>
Restrictions
<a
class=
"headerlink"
href=
"#restrictions"
title=
"Permalink to this headline"
>
¶
</a></h2>
<blockquote>
<div>
none
</div></blockquote>
</div>
<div
class=
"section"
id=
"related-commands"
>
<h2>
Related commands
<a
class=
"headerlink"
href=
"#related-commands"
title=
"Permalink to this headline"
>
¶
</a></h2>
<p><a
class=
"reference internal"
href=
"compute_pe.html"
><em>
compute pe
</em></a>
,
<a
class=
"reference internal"
href=
"compute_pair.html"
><em>
compute pair
</em></a></p>
</div>
<div
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id=
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>
<h2>
Default
<a
class=
"headerlink"
href=
"#default"
title=
"Permalink to this headline"
>
¶
</a></h2>
<p>
The default for
<em>
evalue
</em>
is
<em>
ebond
</em>
.
</p>
</div>
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