Fix minor error in the documentation

[modules/smesh.git] / doc / salome / gui / SMESH / input / adding_quadratic_elements.doc

diff --git a/doc/salome/gui/SMESH/input/adding_quadratic_elements.doc b/doc/salome/gui/SMESH/input/adding_quadratic_elements.doc
index aaa7978123967b5729a7d9867b5ec293cbadf6f3..6a9527b5d04ac4326f901108010db5c04035004b 100644 (file)
--- a/doc/salome/gui/SMESH/input/adding_quadratic_elements.doc
+++ b/doc/salome/gui/SMESH/input/adding_quadratic_elements.doc
@@ -8,14 +8,15 @@ Quadratic elements are defined by the same corner nodes as the
 corresponding linear ones, but in addition they have \a midside nodes
 located between the corner nodes on element sides.
 
 corresponding linear ones, but in addition they have \a midside nodes
 located between the corner nodes on element sides.
 

-If a quadratic quadrilateral element has an additional node at the
-element center, it is a bi-quadratic element (or
-QUAD9). If a quadratic hexahedral element has 7 additional nodes:
-at the element center and at the center of each side it is a
-tri-quadratic element (or HEXA27).
-
-SALOME uses the convention of nodal connectivity of MED library elements. You
-can consult the description of nodal connectivity of elements in the documentation on MED library or 
+If a quadratic 2D element has an additional node at the
+element center, it is a bi-quadratic element (both TRIA7 and
+QUAD9 elements are supported). If a quadratic hexahedral element has 7
+additional nodes: at the element center and at the center of each
+side, it is a tri-quadratic element (or HEXA27).
+
+The convention of nodal connectivity of elements used in SALOME is
+the MED library convention. You can consult the description of nodal
+connectivity of elements in the documentation on MED library or 

 <a href="http://www.code-aster.org/outils/med/html/connectivites.html">
   here </a>.
 
 <a href="http://www.code-aster.org/outils/med/html/connectivites.html">
   here </a>.
 


@@ -55,20 +56,22 @@ a new quadratic element is not created.
 
 
 To create any <b>Quadratic Element</b> specify the nodes which will form your
 
 
 To create any <b>Quadratic Element</b> specify the nodes which will form your

-triangle by selecting them in the 3D viewer with pressed Shift
+element by selecting them in the 3D viewer with pressed Shift

 button. Their numbers will appear in the dialog box as <b>Corner Nodes</b>
 (alternatively you can just input numbers in this field without
 button. Their numbers will appear in the dialog box as <b>Corner Nodes</b>
 (alternatively you can just input numbers in this field without

-selection).The edges formed by the corner nodes will appear in the
-table. To define the middle nodes for each edge double-click on the
-respective field and input the number of the node. All edges and the
-object formed by them will be displayed in the Object browser. When
-all edges are defined you will be able to click \b Apply or <b>Apply and Close</b> button to
+selection). The edges formed by the corner nodes will appear in the
+table. To define the middle nodes for each edge, double-click on the
+respective field and input the number of the node (or pick the node in
+the viewer). For bi-quadratic and tri-quadratic elements, your also
+need to specify central nodes.
+As soon as all needed nodes are specified, a preview of a new
+quadratic element will be displayed in the 3D viewer. Then
+you will be able to click \b Apply or <b>Apply and Close</b> button to

 add the element to the mesh.
 
 \image html aqt.png
 
 add the element to the mesh.
 
 \image html aqt.png
 

-\b Reverse button for Quadratic Edges switches the first and the last
-nodes. For all other elements it reverses the element.
+\b Reverse button reverses the element.

 </li>
 </ol>
 
 </li>
 </ol>