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FEM Mesh CalculiX

FEM element types in CalculiX

For detailed information on FreeCAD FEM elements see FEM Mesh and FEM Element Types. For CalculiX specific questions you may try the Discourse group or the Discord channel.

Segment element

+++ | seg2 FreeCAD nodes | seg3 FreeCAD nodes | +++ | | | +++ | seg2 (B31) CalculiX nodes | seg3 (B32) CalculiX nodes | +++ | | | +++ | FreeCAD → CalculiX, Nodes | | +++ | N1, N2 | N1, N3, N2 | +++

: Segment element from FreeCAD to CalculiX -- node assignment

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 | +++

: Triangle element from FreeCAD to CalculiX -- node assignment

Quadrangle 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 | +++

: Quadrangle element from FreeCAD to CalculiX -- node assignment

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 | +++

: Tetrahedron element from FreeCAD to CalculiX -- node assignment

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 | +++

: Hexahedron element from FreeCAD to CalculiX -- node assignment

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 | +++

: Pentahedron element from FreeCAD to CalculiX -- node assignment

Related

  • FEM CalculiX page
  • CalculiX preferences dialog menu in the FEM Workbench preferences menu

{{FEM Tools navi}}

⏵ documentation index > Developer > Poweruser_Documentation > FEM > FEM Mesh CalculiX

This page is retrieved from https://github.com/FreeCAD/FreeCAD-documentation/blob/main/wiki/FEM_Mesh_CalculiX.md

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