FEM NetzNetgenAusForm
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| Menüeintrag |
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| Netz → FEM mesh from shape by Netgen |
| Arbeitsbereich |
| FEM |
| Standardtastenkürzel |
| Keiner |
| Eingeführt in Version |
| - |
| Siehe auch |
| FEM Anleitung |
Beschreibung
For a finite element analysis the geometry needs to be discretized into a FEM Mesh. This command uses Netgen (which needs to be installed on the system) for calculating the mesh.
Depending on your operating system and your installation package Netgen might be bundled with FreeCAD or not. For further information see FEM Install.
Anwendung
- Select the shape you want to analyze. For a volume, this needs to be a solid or compsolid. A compsolid is necessary if your part is made from multiple materials. (A compsolid can be created with the Part BooleanFragments command.)
- Press the
FEM mesh from shape by Netgen button, or - Select the Mesh →
FEM mesh from shape by Netgen option from the menu.
- Press the
- Optionally, edit the parameters.
- Click the Apply button to make a mesh, or OK button to make a mesh and close the dialogue.
Eigenschaften
- DatenMax. Size: Maximum size of the element in mm.
- DatenSecond order: Second order elements contain more nodes per element. Usually, it is enough to use rougher mesh to obtain same solution precision as with the first order elements,
- true (default); second order elements,
- false; first order elements.
- DatenFineness: Offers predefined levels of mesh density.
- DatenGrowth Rate: Defines how much adjacent elements can differ in size.
- DatenNb. Segs per Edge: Defines the minimum number of mesh segments per edge.
- DatenNb. Segs per Radius: Defines the minimum number of mesh segments per radius.
- DatenOptimize:
- true (default): applies optimization algorithm to improve mesh quality
- false
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
Anwenderdokumentation
- Erste Schritte
- Installation: Herunterladen, Windows, Linux, Mac, Zusätzlicher Komponenten, Docker, AppImage, Ubuntu Snap
- Grundlagen: Über FreeCAD, Graphische Oberfläche, Mausbedienung, Auswahlmethoden, Objektname, Programmeinstellungen, Arbeitsbereiche, Dokumentstruktur, Objekteigenschaften, Hilf FreeCAD, Spende
- Hilfe: Tutorien, Video Tutorien
- Arbeitsbereiche: Std Base, Arch, Assembly, CAM, Draft, FEM, Inspection, Mesh, OpenSCAD, Part, PartDesign, Points, Reverse Engineering, Robot, Sketcher, Spreadsheet, Start, Surface, TechDraw, Test Framework, Web