FEM Mesh CalculiX: Difference between revisions
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For detailed information about FreeCAD FEM Element Types checkt the [[FEM_Mesh]] and [[FEM_Element_Types]] Wiki pages. |
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For detailed information on FreeCAD FEM elements see [[FEM Mesh|FEM Mesh]] and [[FEM Element Types|FEM Element Types]]. For CalculiX specific questions you may try the [https://calculix.discourse.group Discourse group] or the [https://discord.gg/yyuQQg5 Discord channel]. |
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|+ '''Segment element from FreeCAD to CalculiX -- node assignment''' |
|+ '''Segment element from FreeCAD to CalculiX -- node assignment''' |
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| [[File:Seg2.png|250px]] || [[File:Seg3--ccx.png|250px]] |
| [[File:Seg2.png|250px]] || [[File:Seg3--ccx.png|250px]] |
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||FreeCAD |
||FreeCAD → CalculiX, Nodes || |
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|| N1, N2 || N1, N3, N2 |
|| N1, N2 || N1, N3, N2 |
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||FreeCAD --> CalculiX, Code || |
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|| (0)(1) || (0)(2)(1) |
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<p> <br /> </p> |
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|+ '''Triangle element from FreeCAD to CalculiX -- node assignment''' |
|+ '''Triangle element from FreeCAD to CalculiX -- node assignment''' |
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| [[File:Tria3--ccx.png|250px]] || [[File:Tria6--ccx.png|250px]] |
| [[File:Tria3--ccx.png|250px]] || [[File:Tria6--ccx.png|250px]] |
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||FreeCAD |
||FreeCAD → CalculiX, Nodes || |
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|| N1, N2, N3 || N1, N2, N3, N4, N5, N6 |
|| N1, N2, N3 || N1, N2, N3, N4, N5, N6 |
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||FreeCAD --> CalculiX, Code || |
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|| (0)(1)(2) || (0)(1)(2)(3)(4)(5) |
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<p> <br /> </p> |
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=== Quadrangle element === <!--T:4--> |
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{| class="wikitable" style="color: |
{| class="wikitable" style="color:black; background-color:#eeeeef;" cellpadding="5" cellspacing="0" border="1" |
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|+ ''' |
|+ '''Quadrangle element from FreeCAD to CalculiX -- node assignment''' |
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| quad4 FreeCAD nodes || quad8 FreeCAD nodes |
| quad4 FreeCAD nodes || quad8 FreeCAD nodes |
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| [[File:Quad4--ccx.png|250px]] || [[File:Quad8--ccx.png|250px]] |
| [[File:Quad4--ccx.png|250px]] || [[File:Quad8--ccx.png|250px]] |
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||FreeCAD |
||FreeCAD → CalculiX, Nodes || |
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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 |
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||FreeCAD --> CalculiX, Code || |
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|| (0)(1)(2)(3) || (0)(1)(2)(3)(4)(5)(6)(7) |
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<p> <br /> </p> |
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=== Tetrahedron element === <!--T:6--> |
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<!--T:7--> |
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this node order is not implemented |
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TODO: verify node order |
The following node order is not implemented ! TODO: verify node order (do not forget getccxVolumesByFace()). |
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<!--T:8--> |
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{| class="wikitable" style="color: |
{| class="wikitable" style="color:black; background-color:#eeeeef;" cellpadding="5" cellspacing="0" border="1" |
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|+ '''Tetrahedron element from FreeCAD to CalculiX -- node assignment''' |
|+ '''Tetrahedron element from FreeCAD to CalculiX -- node assignment''' |
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| [[File:Tetra4--ccx.png|250px]] || [[File:Tetra10--ccx.png|250px]] |
| [[File:Tetra4--ccx.png|250px]] || [[File:Tetra10--ccx.png|250px]] |
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||FreeCAD |
||FreeCAD → CalculiX, Nodes || |
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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 |
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||FreeCAD --> CalculiX, Code || |
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||(1)(2)(3)(0) || (1)(2)(3)(0)(5)(9)(8)(4)(6)(7) |
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<p> <br /> </p> |
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this node order is not implemented |
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TODO: verify node order and implement |
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<!--T:14--> |
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{| class="wikitable" style="color: |
{| class="wikitable" style="color:black; background-color:#eeeeef;" cellpadding="5" cellspacing="0" border="1" |
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|+ '''Hexahedron element from FreeCAD to CalculiX -- node assignment''' |
|+ '''Hexahedron element from FreeCAD to CalculiX -- node assignment''' |
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| [[File:Hexa8--ccx.png|250px]] || [[File:Hexa20--ccx.png|250px]] |
| [[File:Hexa8--ccx.png|250px]] || [[File:Hexa20--ccx.png|250px]] |
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||FreeCAD |
||FreeCAD → CalculiX, Nodes || |
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||N6, N7, N8, N5, N2, N3, N4, N1 || N6, N7, N8, N5, N2, N3, N4, N1 |
||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 |
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||FreeCAD --> CalculiX, Code || |
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||(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) |
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<p> <br /> </p> |
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<!--T:15--> |
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this node order is not implemented |
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TODO: verify node order and implement |
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|+ '''Pentahedron element from FreeCAD to CalculiX -- node assignment''' |
|+ '''Pentahedron element from FreeCAD to CalculiX -- node assignment''' |
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| [[File:Penta6--ccx.png|250px]] || [[File:Penta15--ccx.png|250px]] |
| [[File:Penta6--ccx.png|250px]] || [[File:Penta15--ccx.png|250px]] |
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||FreeCAD |
||FreeCAD → CalculiX, Nodes || |
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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 |
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||FreeCAD --> CalculiX, Code || |
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|| (4)(5)(3)(1)(2)(0) ||(4)(5)(3)(1)(2)(0)(10)(11)(9)(7)(8)(6)(13)(14)(12) |
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== Related == <!--T:16--> |
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<p> <br /> </p> |
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<!--T:17--> |
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* [[FEM_CalculiX|FEM CalculiX]] page |
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* [[FEM_Preferences#CalculiX|CalculiX preferences]] dialog menu in the FEM Workbench preferences menu |
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[[Category:Developer{{#translation:}}]] |
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[[Category:Poweruser_Documentation{{#translation:}}]] |
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Latest revision as of 09:18, 30 November 2023
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 |
Triangle element
Quadrangle element
Tetrahedron element
The following node order is not implemented ! TODO: verify node order (do not forget getccxVolumesByFace()).
Hexahedron element
Pentahedron element
Related
- FEM CalculiX page
- CalculiX preferences dialog menu in the FEM Workbench preferences menu
FEM
- Materials: Solid, Fluid, Nonlinear mechanical, Reinforced (concrete); Material editor
- Element geometry: Beam (1D), Beam rotation (1D), Shell (2D), Fluid flow (1D)
Constraints
- Electromagnetic: Electrostatic potential, Current density, Magnetization
- Geometrical: Plane rotation, Section print, Transform
- Mechanical: Fixed, Displacement, Contact, Tie, Spring, Force, Pressure, Centrif, Self weight
- Thermal: Initial temperature, Heat flux, Temperature, Body heat source
- Overwrite Constants: Constant vacuum permittivity
- Solve: CalculiX Standard, Elmer, Mystran, Z88; Equations: Deformation, Elasticity, Electrostatic, Electricforce, Magnetodynamic, Magnetodynamic 2D, Flow, Flux, Heat; Solver: Solver control, Solver run
- Results: Purge, Show; Postprocessing: Apply changes, Pipeline from result, Warp filter, Scalar clip filter, Function cut filter, Region clip filter, Contours filter, Line clip filter, Stress linearization plot, Data at point clip filter, Filter function plane, Filter function sphere, Filter function cylinder, Filter function box
- Additional: Preferences; FEM Install, FEM Mesh, FEM Solver, FEM CalculiX, FEM Concrete; FEM Element Types
User documentation
- Getting started
- Installation: Download, Windows, Linux, Mac, Additional components, Docker, AppImage, Ubuntu Snap
- Basics: About FreeCAD, Interface, Mouse navigation, Selection methods, Object name, Preferences, Workbenches, Document structure, Properties, Help FreeCAD, Donate
- Help: Tutorials, Video tutorials
- Workbenches: Std Base, Arch, Assembly, CAM, Draft, FEM, Inspection, Mesh, OpenSCAD, Part, PartDesign, Points, Reverse Engineering, Robot, Sketcher, Spreadsheet, Start, Surface, TechDraw, Test Framework, Web
- Hubs: User hub, Power users hub, Developer hub