X-Git-Url: http://git.salome-platform.org/gitweb/?p=modules%2Fsmesh.git;a=blobdiff_plain;f=doc%2Fsalome%2Fgui%2FSMESH%2Faspect_ratio_3d.htm;h=20573a1fdf15a29216192b9fcdb9e15e3bdfaa3e;hp=560b78509260ab2e5d63daaf51290cebd5d5017a;hb=deb5f024f2af09293ce204616d618aeda01c965a;hpb=493903908df7452e11b897938a8dead1835185f8 diff --git a/doc/salome/gui/SMESH/aspect_ratio_3d.htm b/doc/salome/gui/SMESH/aspect_ratio_3d.htm index 560b78509..20573a1fd 100755 --- a/doc/salome/gui/SMESH/aspect_ratio_3d.htm +++ b/doc/salome/gui/SMESH/aspect_ratio_3d.htm @@ -97,29 +97,13 @@ else
This mesh quality criterion resembles to the Aspect ratio - criterion, however, it is also applied to 3D mesh elements: tetrahedrons, + criterion, however, it is applied to 3D mesh elements: tetrahedrons, pentahedrons, hexahedrons, etc.
-There are 2 simple formulas to evaluate directly the value of quality - Qk for simplex in 2D and 3D. The formulas are :
+There are simple formulas to evaluate directly the value of quality + Qk for simplex in 3D. The formulas are :
- For triangle :
- -- - - - - -
where :
- -- - - -
- -
+
For tetrahedron :
@@ -136,7 +120,7 @@ else-
For the other types of element like quadrangle, pentahedron and hexahedron +
For the other types of element like pentahedron and hexahedron the formula is the following :
@@ -144,6 +128,17 @@ else
Where Qi are the quality of all the possible simplex (of same dimension as the element) that compose the element.
+For example, hexahedron is analysed via 6 tetrahedrons this way:
+ ++ +
+ +
For 3D elements with quadrangular faces, aspect ratio of such faces +is also analysed and the maximal one over 3D and 2D qualities is taken.
+ ++
See Also