3 \page extrusion_page Extrusion
5 \n Extrusion is used to build mesh elements of plus one
6 dimension than the input ones. Boundary elements around elements of
7 plus one dimension are additionally created. All created elements
8 can be automatically grouped.
9 <p>Any node, segment or 2D element can be extruded. Each type of
10 elements is extruded into a corresponding type of result elements:
12 <tr><td><b>Extruded element</b></td><td><b> Result element </b></td></tr>
13 <tr><td>Node </td><td> Segment </td></tr>
14 <tr><td>Segment </td><td> Quadrilateral </td></tr>
15 <tr><td>Triangle </td><td> Pentahedron </td></tr>
16 <tr><td>Quadrilateral </td><td> Hexahedron </td></tr>
17 <tr><td>Polygon </td><td> Polyhedron </td></tr>
18 <tr><td>Hexagonal polygon </td><td> Hexagonal prism </td></tr>
21 <em>To use extrusion:</em>
23 <li>From the \b Modification menu choose the \b Extrusion item or click
24 <em>"Extrusion"</em> button in the toolbar.
27 \image html image91.png
28 <em>"Extrusion" button</em>
31 The following dialog common for line and planar elements will appear:
33 \image html extrusionalongaline1.png
35 \image html extrusionalongaline2.png
41 <li>Select the type of elements which will be extruded (nodes, 1D or
43 <li>Specify the IDs of the elements which will be extruded by one
46 <li><b>Select the whole mesh, submesh or group</b> activating this
48 <li>Choose mesh elements with the mouse in the 3D Viewer. It is
49 possible to select a whole area with a mouse frame.</li>
50 <li>Input the element IDs directly in <b>ID Elements</b>
51 field. The selected elements will be highlighted in the viewer.</li>
52 <li>Apply Filters. <b>Set filter</b> button allows to apply a
53 filter to the selection of elements. See more about filters in
54 the \ref filtering_elements "Selection filters" page.</li>
57 <li>If the <b>Extrude to Distance</b> radio button is selected</li>
59 <li>specify the distance at which the elements will be extruded.</li>
61 <li>If the <b>Extrude Along Vector</b> radio button is selected</li>
63 <li>specify the coordinates of the vector along which the elements
64 will be extruded, or select the face (the normal to the face will
65 define the vector),</li>
66 <li>specify the distance of extrusion along the vector.</li>
68 <li>Specify the number of steps.</li>
69 <li>If you activate <b>Generate Groups</b> check-box, the <em>result elements</em>
70 created from <em>extruded elements</em> contained in groups will be
71 included into new groups named by pattern "<old group
72 name>_extruded" and "<old group name>_top". For example if an
73 extruded quadrangle is included in \a Group_1 group then result
74 hexahedra will be included in \a Group_1_extruded group and a
75 quadrangle created at the "top" of extruded mesh will
76 be included in \a Group_1_top group. <br>This check-box is active
77 only if there are some groups in the mesh.</li>
80 <li>Click \b Apply or <b> Apply and Close</b> button to confirm the operation.</li>
83 \image html image77.jpg "The mesh with an edge selected for extrusion"
85 \image html image76.jpg "The mesh with extruded edge"
87 <br><b>See Also</b> a sample TUI Script of an
88 \ref tui_extrusion "Extrusion" operation.