Difference between revisions of "FEM Element Types"
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== Introduction == <!--T:1--> | == Introduction == <!--T:1--> | ||
This description is based on the MED format as described in [https://hammi.extra.cea.fr/static/MED/web_med/logiciels/med-2.3.1/doc/html/modele_de_donnees.html#3. modele de donnes]. | This description is based on the MED format as described in [https://hammi.extra.cea.fr/static/MED/web_med/logiciels/med-2.3.1/doc/html/modele_de_donnees.html#3. modele de donnes]. |
Revision as of 18:58, 31 January 2020
Introduction
This description is based on the MED format as described in modele de donnes.
Segment element
Edge | Node 1 | Node 2 | Middle node |
---|---|---|---|
E1 | N1 | N2 | N3 |
Triangle element
Edge | Node 1 | Node 2 | Middle node |
---|---|---|---|
E1 | N1 | N2 | N4 |
E2 | N2 | N3 | N5 |
E3 | N3 | N1 | N6 |
Face | Edge 1 | Edge 2 | Edge 3 |
---|---|---|---|
F1 | E1 | E2 | E3 |
Face | Node 1 | Node 2 | Node 3 | Node 1 |
---|---|---|---|---|
F1 | N1 | N2 | N3 | N1 |
Face | Node 1 | Node 2 | Node 3 | Node 4 | Node 5 | Node 6 | Node 1 |
---|---|---|---|---|---|---|---|
F1 | N1 | N4 | N2 | N5 | N3 | N6 | N1 |
Quadrangle element
Edge | Node 1 | Node 2 | Middle node |
---|---|---|---|
E1 | N1 | N2 | N5 |
E2 | N2 | N3 | N6 |
E3 | N3 | N4 | N7 |
E4 | N4 | N1 | N8 |
Face | Edge 1 | Edge 2 | Edge 3 | Edge 4 |
---|---|---|---|---|
F1 | E1 | E2 | E3 | E4 |
Face | Node 1 | Node 2 | Node 3 | Node 4 | Node 1 |
---|---|---|---|---|---|
F1 | N1 | N2 | N3 | N4 | N1 |
Face | Node 1 | Node 2 | Node 3 | Node 4 | Node 5 | Node 6 | Node 7 | Node 8 | Node 1 |
---|---|---|---|---|---|---|---|---|---|
F1 | N1 | N5 | N2 | N6 | N3 | N7 | N4 | N8 | N1 |
Tetrahedron element
Edge | Node 1 | Node 2 | Middle node |
---|---|---|---|
E1 | N1 | N2 | N5 |
E2 | N2 | N3 | N6 |
E3 | N3 | N1 | N7 |
E4 | N1 | N4 | N8 |
E5 | N2 | N4 | N9 |
E6 | N3 | N4 | N10 |
Face | Edge 1 | Edge 2 | Edge 3 |
---|---|---|---|
F1 | E1 | E2 | E3 |
F2 | E4 | -E5 | -E1 |
F3 | E5 | -E6 | -E2 |
F4 | E6 | -E4 | -E3 |
Face | Node 1 | Node 2 | Node 3 | Node 1 |
---|---|---|---|---|
F1 | N1 | N2 | N3 | N1 |
F2 | N1 | N4 | N2 | N1 |
F3 | N2 | N4 | N3 | N2 |
F4 | N3 | N4 | N1 | N3 |
Face | Node 1 | Node 2 | Node 3 | Node 4 | Node 5 | Node 6 | Node 1 |
---|---|---|---|---|---|---|---|
F1 | N1 | N5 | N2 | N6 | N3 | N7 | N1 |
F2 | N1 | N8 | N4 | N9 | N2 | N5 | N1 |
F3 | N2 | N9 | N4 | N10 | N3 | N6 | N2 |
F4 | N3 | N10 | N4 | N8 | N1 | N7 | N3 |
Hexahedron element
Edge | Node 1 | Node 2 | Middle node |
---|---|---|---|
E1 | N1 | N2 | N9 |
E2 | N2 | N3 | N10 |
E3 | N3 | N4 | N11 |
E4 | N4 | N1 | N12 |
E5 | N5 | N6 | N13 |
E6 | N6 | N7 | N14 |
E7 | N7 | N8 | N15 |
E8 | N8 | N5 | N16 |
E9 | N1 | N5 | N17 |
E10 | N2 | N6 | N18 |
E11 | N3 | N7 | N19 |
E12 | N4 | N8 | N20 |
Face | Edge 1 | Edge 2 | Edge 3 | Edge 4 |
---|---|---|---|---|
F1 | E1 | E2 | E3 | E4 |
F2 | -E8 | -E7 | -E6 | -E5 |
F3 | E9 | E5 | -E10 | -E1 |
F4 | E10 | E6 | -E11 | -E2 |
F5 | E11 | E7 | -E12 | -E3 |
F6 | E12 | E8 | -E9 | -E4 |
Face | Node 1 | Node 2 | Node 3 | Node 4 | Node 1 |
---|---|---|---|---|---|
F1 | N1 | N2 | N3 | N4 | N1 |
F2 | N5 | N8 | N7 | N6 | N5 |
F3 | N1 | N5 | N6 | N2 | N1 |
F4 | N2 | N6 | N7 | N3 | N2 |
F5 | N3 | N7 | N8 | N4 | N3 |
F6 | N4 | N8 | N5 | N1 | N4 |
Face | Node 1 | Node 2 | Node 3 | Node 4 | Node 5 | Node 6 | Node 7 | Node 8 | Node1 |
---|---|---|---|---|---|---|---|---|---|
F1 | N1 | N9 | N2 | N10 | N3 | N11 | N4 | N12 | N1 |
F2 | N5 | N16 | N8 | N15 | N7 | N14 | N6 | N13 | N5 |
F3 | N1 | N17 | N5 | N13 | N6 | N18 | N2 | N9 | N1 |
F4 | N2 | N18 | N6 | N14 | N7 | N19 | N3 | N10 | N2 |
F5 | N3 | N19 | N7 | N15 | N8 | N20 | N4 | N11 | N3 |
F6 | N4 | N20 | N8 | N16 | N5 | N17 | N1 | N12 | N4 |
Pentahedron element (prism)
Edge | Node 1 | Node 2 | Middle node |
---|---|---|---|
E1 | N1 | N2 | N7 |
E2 | N2 | N3 | N8 |
E3 | N3 | N1 | N9 |
E4 | N4 | N5 | N10 |
E5 | N5 | N6 | N11 |
E6 | N6 | N4 | N12 |
E7 | N1 | N4 | N13 |
E8 | N2 | N5 | N14 |
E9 | N3 | N6 | N15 |
Face | Edge 1 | Edge 2 | Edge 3 | Edge 4 |
---|---|---|---|---|
F1 | E1 | E2 | E3 | _ |
F2 | -E6 | -E5 | -E4 | _ |
F3 | E7 | E4 | -E8 | -E1 |
F4 | E8 | E5 | -E9 | -E2 |
F5 | E9 | E6 | -E7 | -E3 |
Face | Node 1 | Node 2 | Node 3 | Node 4 | Node 1 |
---|---|---|---|---|---|
F1 | N1 | N2 | N3 | _ | N1 |
F2 | N4 | N6 | N5 | _ | N4 |
F3 | N1 | N4 | N5 | N2 | N1 |
F4 | N2 | N5 | N6 | N3 | N2 |
F5 | N3 | N6 | N4 | N1 | N3 |
Face | Node 1 | Node 2 | Node 3 | Node 4 | Node 5 | Node 6 | Node 7 | Node 8 | Node 1 |
---|---|---|---|---|---|---|---|---|---|
F1 | N1 | N7 | N2 | N8 | N3 | N9 | _ | _ | N1 |
F2 | N4 | N12 | N6 | N11 | N5 | N10 | _ | _ | N4 |
F3 | N1 | N13 | N4 | N10 | N5 | N14 | N2 | N7 | N1 |
F4 | N2 | N14 | N5 | N11 | N6 | N15 | N3 | N8 | N2 |
F5 | N3 | N15 | N6 | N12 | N4 | N13 | N1 | N9 | N3 |
Pyramid element
Edge | Node 1 | Node 2 | Middle node |
---|---|---|---|
E1 | N1 | N2 | N6 |
E2 | N2 | N3 | N7 |
E3 | N3 | N4 | N8 |
E4 | N4 | N1 | N9 |
E5 | N1 | N5 | N10 |
E6 | N2 | N5 | N11 |
E7 | N3 | N5 | N12 |
E8 | N4 | N5 | N13 |
Face | Edge 1 | Edge 2 | Edge 3 | Edge 4 |
---|---|---|---|---|
F1 | E1 | E2 | E3 | E4 |
F2 | E5 | -E6 | -E1 | _ |
F3 | E6 | -E7 | -E2 | _ |
F4 | E7 | -E8 | -E3 | _ |
F5 | E8 | E5 | -E4 | _ |
Face | Node 1 | Node 2 | Node 3 | Node4 | Node1 |
---|---|---|---|---|---|
F1 | N1 | N2 | N3 | N4 | N1 |
F2 | N1 | N5 | N2 | _ | N1 |
F3 | N2 | N5 | N3 | _ | N2 |
F4 | N3 | N5 | N4 | _ | N3 |
F5 | N4 | N5 | N1 | _ | N4 |
Face | Node 1 | Node 2 | Node 3 | Node4 | Node 5 | Node 6 | Node 7 | Node8 | Node1 |
---|---|---|---|---|---|---|---|---|---|
F1 | N1 | N6 | N2 | N7 | N3 | N8 | N4 | N9 | N1 |
F2 | N1 | N10 | N5 | N11 | N2 | N6 | _ | _ | N1 |
F3 | N2 | N11 | N5 | N12 | N13 | N7 | _ | _ | N2 |
F4 | N3 | N12 | N5 | N13 | N4 | N8 | _ | _ | N3 |
F5 | N4 | N13 | N5 | N10 | N1 | N9 | _ | _ | N4 |
- Materials: Solid, Fluid, Nonlinear mechanical; Material editor
- Element geometry: Beam (1D), Beam rotation (1D), Shell (2D), Fluid flow (1D)
Constraints
- Electrostatic: Potential
- Fluid: Initial velocity, Fluid boundary, Flow velocity
- Mechanical: Fixed, Displacement, Plane rotation, Contact, Transform, Force, Pressure, Self weight, Bearing, Gear, Pulley
- Thermal: Initial temperature, Heat flux, Temperature, Heat source
- Solve: Calculix tools, CalculiX, Elmer, Z88; Equations: Heat, Elasticity, Electrostatic, Flux, Flow; Solver: Solver control, Solver run
- Results: Purge, Show; Postprocessing: Apply changes, Pipeline from result, Create warp vector filter, Create scalar clip filter, Create cut filter, Create clip filter, Create data along line filter, Create linearized stresses,
Create data at point filter, Create functions
- Utilities: Clipping plane, Remove clipping planes; Mesh clear, Mesh display info
- Additional: Preferences; FEM Install, FEM Mesh, FEM Solver, FEM CalculiX, FEM Project, FEM Concrete; FEM Element Types

- 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, Draft, FEM, Image, Inspection, Mesh, OpenSCAD, Part, PartDesign, Path, Points, Raytracing, Reverse Engineering, Sketcher, Spreadsheet, Start, Surface, TechDraw, Test Framework, Web
- Deprecated or unmaintained workbenches: Complete, Drawing, Robot
- Hubs: User hub, Power users hub, Developer hub