\n This operation allows duplicating mesh nodes or/and elements, which can be useful to emulate a crack in the model.
-Duplication consists in creation of mesh element "equal" to existing ones.
+Duplication consists in creation of mesh elements "equal" to existing ones.
<em>To duplicate nodes or/and elements:</em>
<ol>
<br>
\image html duplicate_nodes.png "Duplicate Nodes or/and Elements button"
</li>
-<li>Check in the dialog box one of three radio buttons corresponding to
+<li>Check in the dialog box one of four radio buttons corresponding to
the type of duplication operation you would like to perform.</li>
<li>Fill the other fields available in the dialog box (depending on
the chosen operation mode).</li>
operation of duplication.</li>
</ol>
-\n "Duplicate Nodes or/and Elements" dialog has three working modes:
+\n "Duplicate Nodes or/and Elements" dialog has four working modes:
<ul>
<li>\ref mode_without_elem_anchor "Duplicate nodes only"</li>
<li>\ref mode_with_elem_anchor "Duplicate nodes and border elements"</li>
<li>\ref mode_elem_only_anchor "Duplicate elements only"</li>
+<li>\ref mode_group_boundary_anchor "Duplicate nodes on group boundaries"</li>
</ul>
<br>
<h2>Duplicate elements only</h2>
This mode duplicates the given elements, i.e. creates new elements with the same nodes as the given elements.
-
<br>
-
\image html duplicate03.png
+Parameters to be defined in this mode:
<ul>
<li><b>Group of elements to duplicate</b> (<em>mandatory</em>): these
elements will be duplicated.</li>
"DoubleElements".</li>
</ul>
+<br>
+\anchor mode_group_boundary_anchor
+<h2>Duplicate nodes on group boundaries</h2>
+
+This mode duplicates nodes located on boundaries between given groups of
+volumes. If required, flat elements are created on the duplicated
+nodes: a triangular facet shared by two volumes of two groups generates
+a flat prism, a quadrangular facet generates a flat hexahedron.
+<br>
+The created flat volumes are stored in groups. These groups are named
+according to the position of the group in the list of groups: group
+"j_n_p" is a group of flat elements that are built between the group \#n
+and the group \#p in the group list. All the flat elements are gathered
+into the group named "joints3D". The flat element of the multiple
+junctions between the simple junction are stored in a group named
+"jointsMultiples".
+
+<br>
+
+\image html duplicate04.png
+
+Parameters to be defined in this mode:
+<ul>
+<li><b>Groups of volumes</b> (<em>mandatory</em>): list of volume
+ groups. These groups should be disjoint, i.e. should not share volumes.</li>
+<li><b>Create joint elements</b> : if checked - the flat elements are created.</li>
+<li><b>On all boundaries</b> : if checked - then the volumes not
+ included into the <b>Groups of volumes</b> are considered as another given
+ group. And thus nodes on boundary between <b>Groups of volumes</b> and the
+ rest mesh are also duplicated.</li>
+</ul>
+
<br><b>See Also</b> a sample TUI Script of a
\ref tui_duplicate_nodes "Duplicate nodes or/and elements" operation.
