FEM Mesh CalculiX: Difference between revisions

Revision as of 10:05, 12 May 2016

FEM Element Types CalculiX

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

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

This 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

this node order is not implemented TODO: verify node order and implement

**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

this node order is not implemented TODO: verify node order and implement

**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

@@ Line 17: / Line 17: @@
 |-
 || N1, N2 || N1, N3, N2
-|-
-||FreeCAD --> CalculiX, Code ||
-|-
-|| (0)(1)  || (0)(2)(1)
 |}
@@ Line 41: / Line 37: @@
 |-
 || N1, N2, N3  || N1, N2, N3, N4, N5, N6
-|-
-||FreeCAD --> CalculiX, Code ||
-|-
-|| (0)(1)(2)  || (0)(1)(2)(3)(4)(5)
 |}
 <p>  <br />  </p>
@@ Line 64: / Line 56: @@
 |-
 || N1, N2, N3, N4 || N1, N2, N3, N4, N5, N6, N7, N8
-|-
-||FreeCAD --> CalculiX, Code ||
-|-
-|| (0)(1)(2)(3)  || (0)(1)(2)(3)(4)(5)(6)(7)
 |}
 <p>  <br />  </p>
@@ Line 73: / Line 61: @@
 ==== Tetrahedron element ====
-this node order is not implemented
+This node order is not implemented ! TODO: verify node order (do not forget getccxVolumesByFace()).
-TODO: verify node order and implement (do not forget getccxVolumesByFace())
 {| class="wikitable" style="color:green; background-color:#ffffcc;" cellpadding="5" cellspacing="0" border="1"
@@ Line 90: / Line 77: @@
 |-
 || N2, N3, N4, N1 || N2, N3, N4, N1, N6, N10, N9, N5, N7, N8
-|-
-||FreeCAD --> CalculiX, Code ||
-|-
-||(1)(2)(3)(0) || (1)(2)(3)(0)(5)(9)(8)(4)(6)(7)
 |}
@@ Line 117: / Line 100: @@
 |-
 ||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
-|-
-||FreeCAD --> CalculiX, Code ||
-|-
-||(5)(6)(7)(4)(1)(2)(3)(0) || (5)(6)(7)(4)(1)(2)(3)(0)(13)(14)(15)(12)(9)(10)(11)(8)(17)(18)(19)(16)
 |}
@@ Line 144: / Line 123: @@
 |-
 || N5, N6, N4, N2, N3, N1 ||  N5, N6, N4, N2, N3, N1, N11, N12, N10, N8, N9, N7, N14, N15, N13
-|-
-||FreeCAD --> CalculiX, Code ||
-|-
-|| (4)(5)(3)(1)(2)(0) ||(4)(5)(3)(1)(2)(0)(10)(11)(9)(7)(8)(6)(13)(14)(12)
 |}