FEM ConstraintSelfWeight/de: Difference between revisions
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Ein Objekt zum Analysis genannten Analyse-Container hinzufügen: |
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Add object to the analysis named Analysis: |
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Revision as of 12:27, 24 September 2022
FEM ConstraintSelfWeight |
Menu location |
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Model → Mechanical Constraints → Constraint self weight |
Workbenches |
FEM |
Default shortcut |
None |
Introduced in version |
- |
See also |
FEM tutorial |
Beschreibung
Die Randbedingung Eigengewicht legt fest, dass die Erdbeschleunigung von 9,81 m/s^2 auf das gesamte Modell in der voreingestellten Richtung wirkt.
Anwendung
- Es gibt mehrereMöglichkeiten den Befehl aufzurufen:
- Die Schaltfläche FEM ConstraintSelfWeight drücken.
- Den Menüeintrag Model → Mechanical Constraints → Constraint self weight auswählen.
- Die Richtung der Erdanziehungskraft kann durch Ändern der Vektorkoordinaten im Eigenschafteneditor des neu erstellten ConstraintSelfWeight-Objekts angepasst werden.
Skripten
Neues Objekt:
import ObjectsFem
ObjectsFem.makeConstraintSelfWeight(name)
Ein Objekt zum Analysis genannten Analyse-Container hinzufügen:
App.ActiveDocument.Analysis.Member = App.ActiveDocument.Analysis.Member + [(object)]
Example:
import ObjectsFem
selfweight_obj = ObjectsFem.makeConstraintSelfWeight("MySelfWeightObject")
App.ActiveDocument.Analysis.Member = App.ActiveDocument.Analysis.Member + [selfweight_obj]
Solver CalculiX
Limitations
- You need to modify .inp file to edit gravity acceleration.
- Self weight is applied to the element set Eall means to the whole model.
Editing CalculiX input file
Acceleration constant can be edited by hand modification after generating CalculiX input file.
Example of lines in .inp file:
*DLOAD
Eall,GRAV,9810,0.0,0.0,-1.0
where 9810 is gravity acceleration magnitude in [mm/s^2], and 0,0,-1 is direction vector.
Solver Z88
- not implemented in Z88 solver (March 2017)
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, Surface, TechDraw, Test Framework