FEM Element Types

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

Segment element

Segments.gif


Triangle element

Triangles.gif


Quadratic element

Quadrangles.gif


Tetrahedron element

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

Pyramides.gif


Hexahedron element

Hexaedres.gif

Hexahedron with eight or twenty nodes
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 N7 N15
E8 N8 N5 N16
E9 N1 N5 N17
E10 N2 N6 N18
E11 N3 N7 N19
E12 N4 N8 N20
Hexahedron faces
Face Edge 1 Edge 2 Edge 3 Edge 4
F1 A1 A2 A3 A4
F2 -A8 -A7 -A6 -A5
F3 A9 A5 -A10 -A1
F4 A10 A6 -A11 -A2
F5 A11 A7 -A12 -A3
F6 A12 A8 -A9 -A4


Pentahedron element

Pentaedres.gif


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