FEM Mesh CalculiX: Difference between revisions

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For detailed information on FreeCAD FEM elements see [[FEM Mesh|FEM Mes]] and [[FEM Element Types|FEM Element Types]].
For detailed information on FreeCAD FEM elements see [[FEM Mesh|FEM Mes]] and [[FEM Element Types|FEM Element Types]].


==== Segment element ==== <!--T:2-->
=== Segment element === <!--T:2-->


<!--T:12-->
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|| N1, N2 || N1, N3, N2
|| N1, N2 || N1, N3, N2
|}
|}
<p> <br /> </p>


==== Triangle element ==== <!--T:3-->
=== Triangle element === <!--T:3-->


<!--T:13-->
<!--T:13-->
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|| N1, N2, N3 || N1, N2, N3, N4, N5, N6
|| N1, N2, N3 || N1, N2, N3, N4, N5, N6
|}
|}
<p> <br /> </p>


==== Quadratic element ==== <!--T:4-->
=== Quadratic element === <!--T:4-->


<!--T:5-->
<!--T:5-->
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|| N1, N2, N3, N4 || N1, N2, N3, N4, N5, N6, N7, N8
|| N1, N2, N3, N4 || N1, N2, N3, N4, N5, N6, N7, N8
|}
|}
<p> <br /> </p>


==== Tetrahedron element ==== <!--T:6-->
=== Tetrahedron element === <!--T:6-->


<!--T:7-->
<!--T:7-->
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|| N2, N3, N4, N1 || N2, N3, N4, N1, N6, N10, N9, N5, N7, N8
|| N2, N3, N4, N1 || N2, N3, N4, N1, N6, N10, N9, N5, N7, N8
|}
|}
<p> <br /> </p>


==== Hexahedron element ==== <!--T:9-->
=== Hexahedron element === <!--T:9-->


<!--T:14-->
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||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
||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
|}
|}
<p> <br /> </p>


==== Pentahedron element ==== <!--T:10-->
=== Pentahedron element === <!--T:10-->


<!--T:15-->
<!--T:15-->
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|| N5, N6, N4, N2, N3, N1 || N5, N6, N4, N2, N3, N1, N11, N12, N10, N8, N9, N7, N14, N15, N13
|| N5, N6, N4, N2, N3, N1 || N5, N6, N4, N2, N3, N1, N11, N12, N10, N8, N9, N7, N14, N15, N13
|}
|}
<p> <br /> </p>



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{{FEM Tools navi}}
[[Category:Developer]]
[[Category:Developer]]
[[Category:Poweruser_Documentation]]
[[Category:Poweruser_Documentation]]



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Revision as of 23:21, 6 April 2019

Other languages:

FEM element types in CalculiX

For detailed information on FreeCAD FEM elements see FEM Mes and FEM Element Types.

Segment element

Segment element from FreeCAD to CalculiX -- node assignment
seg2 FreeCAD nodes seg3 FreeCAD nodes
seg2 (B31) CalculiX nodes seg3 (B32) CalculiX nodes
FreeCAD --> CalculiX, Nodes
N1, N2 N1, N3, N2

Triangle element

Triangle element from FreeCAD to CalculiX -- node assignment
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

Quadratic element from FreeCAD to CalculiX -- node assignment
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()).

Tetrahedron element from FreeCAD to CalculiX -- node assignment
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

Hexahedron element from FreeCAD to CalculiX -- node assignment
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

Pentahedron element from FreeCAD to CalculiX -- node assignment
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