# FEM Mesh CalculiX

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## FEM Element Types CalculiX

For detailed information about FreeCAD FEM Element Types checkt the FEM_Mesh and FEM_Element_Types Wiki pages.

#### Segment element

 seg2 FreeCAD nodes seg3 FreeCAD nodes seg2 (B31) CalculiX nodes seg3 (B32) CalculiX nodes FreeCAD --> CalculiX, Nodes N1, N2 N1, N3, N2

#### Triangle element

 tria3 FreeCAD nodes tria6 FreeCAD nodes tria3 (S3) CalculiX nodes tria6 (S6) CalculiX nodes FreeCAD --> CalculiX, Nodes N1, N2, N3 N1, N2, N3, N4, N5, N6

#### Quadratic element

 quad4 FreeCAD nodes quad8 FreeCAD nodes quad4 (S4) CalculiX nodes quad8 (S8) CalculiX nodes FreeCAD --> CalculiX, Nodes N1, N2, N3, N4 N1, N2, N3, N4, N5, N6, N7, N8

#### Tetrahedron element

The following node order is not implemented ! TODO: verify node order (do not forget getccxVolumesByFace()).

 tetra4 FreeCAD nodes tetra10 FreeCAD nodes tetra4 (C3D4) CalculiX nodes tetra10 (C3D10) CalculiX nodes FreeCAD --> CalculiX, Nodes N2, N3, N4, N1 N2, N3, N4, N1, N6, N10, N9, N5, N7, N8

#### Hexahedron element

 hexa8 FreeCAD nodes hexa20 FreeCAD nodes hexa8 (C3D8) CalculiX nodes hexa20 (C3D20) CalculiX nodes FreeCAD --> CalculiX, Nodes N6, N7, N8, N5, N2, N3, N4, N1 N6, N7, N8, N5, N2, N3, N4, N1 , N14, N15, N16, N13, N10, N11, N12, N9, N18, N19, N20, N17

#### Pentahedron element

 penta6 FreeCAD nodes penta15 FreeCAD nodes penta6 (C3D6) CalculiX nodes penta15 (C3D15) CalculiX nodes FreeCAD --> CalculiX, Nodes N5, N6, N4, N2, N3, N1 N5, N6, N4, N2, N3, N1, N11, N12, N10, N8, N9, N7, N14, N15, N13

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