Difference between revisions of "FEM Element Types"

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{| class="wikitable" style="color:green; background-color:#ffffcc;" cellpadding="5" cellspacing="0" border="1"
 
{| class="wikitable" style="color:green; background-color:#ffffcc;" cellpadding="5" cellspacing="0" border="1"
|+ '''Hexahedron with eight or twenty nodes'''
+
|+ '''Edges of Hexa8 and Hexa20'''
 
|-
 
|-
 
! Edge !! Node 1 !! Node 2 !! Middle node
 
! Edge !! Node 1 !! Node 2 !! Middle node
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| E6 || N6 || N7 || N14
 
| E6 || N6 || N7 || N14
 
|-
 
|-
| E7 || N7 || N7 || N15
+
| E7 || N7 || N8 || N15
 
|-
 
|-
 
| E8 || N8 || N5 || N16
 
| E8 || N8 || N5 || N16
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{| class="wikitable" style="color:green; background-color:#ffffcc;" cellpadding="5" cellspacing="0" border="1"
 
{| class="wikitable" style="color:green; background-color:#ffffcc;" cellpadding="5" cellspacing="0" border="1"
|+ '''Hexahedron faces'''
+
|+ '''Faces by Edges of Hexa8 and Hexa20'''
 
|-
 
|-
 
! Face !! Edge 1 !! Edge 2 !! Edge 3 !! Edge 4
 
! Face !! Edge 1 !! Edge 2 !! Edge 3 !! Edge 4
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| F6 || E12|| E8 ||-E9 ||-E4  
 
| F6 || E12|| E8 ||-E9 ||-E4  
 
|}
 
|}
 +
 +
{| class="wikitable" style="color:green; background-color:#ffffcc;" cellpadding="5" cellspacing="0" border="1"
 +
|+ '''Faces by Nodes of Hexa8'''
 +
|-
 +
! Face !! Node 1 !! Node 2 !! Node 3 !! Node4 !! Node1
 +
|-
 +
| F1 || N1 || N2 || N3 || N4 || N1
 +
|-
 +
| F2 || N5 || N8 || N7 || N6 || N5
 +
|-
 +
| F3 || N1 || N5 || N6 || N2 || N1
 +
|-
 +
| F4 || N2 || N6 || N7 || N3 || N2
 +
|-
 +
| F5 || N3 || N7 || N8 || N4 || N3
 +
|-
 +
| F6 || N4 || N8 || N5 || N1 || N4
 +
|}
 +
 
<translate><!--T:15-->
 
<translate><!--T:15-->
 
<p>  <br />  </p>
 
<p>  <br />  </p>

Revision as of 16:53, 7 December 2015

This description is based on the MED format as described here.

Segment element

File:Segments.gif


Triangle element

File:Triangles.gif


Quadratic element

File:Quadrangles.gif


Tetrahedron element

File:Tetraedres.gif


Tetrahedron with four or ten nodes
Edge Node 1 Node 2 Middle node
E1 N1 N2 N5
E2 N2 N3 N6
E3 N3 N1 N7
E4 N1 N4 N8
E5 N2 N4 N9
E6 N3 N4 N10
Tetrahedron Faces
Face Edge 1 Edge 2 Edge 3
F1 E1 E2 E3
F2 E4 -E5 -E1
F3 E5 -E6 -E2
F4 E6 -E4 -E3


Pyramid element

File:Pyramides.gif


Hexahedron element

File:Hexaedres.gif

Edges of Hexa8 and Hexa20
Edge Node 1 Node 2 Middle node
E1 N1 N2 N9
E2 N2 N3 N10
E3 N3 N4 N11
E4 N4 N1 N12
E5 N5 N6 N13
E6 N6 N7 N14
E7 N7 N8 N15
E8 N8 N5 N16
E9 N1 N5 N17
E10 N2 N6 N18
E11 N3 N7 N19
E12 N4 N8 N20
Faces by Edges of Hexa8 and Hexa20
Face Edge 1 Edge 2 Edge 3 Edge 4
F1 E1 E2 E3 E4
F2 -E8 -E7 -E6 -E5
F3 E9 E5 -E10 -E1
F4 E10 E6 -E11 -E2
F5 E11 E7 -E12 -E3
F6 E12 E8 -E9 -E4
Faces by Nodes of Hexa8
Face Node 1 Node 2 Node 3 Node4 Node1
F1 N1 N2 N3 N4 N1
F2 N5 N8 N7 N6 N5
F3 N1 N5 N6 N2 N1
F4 N2 N6 N7 N3 N2
F5 N3 N7 N8 N4 N3
F6 N4 N8 N5 N1 N4


Pentahedron element

File:Pentaedres.gif


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