Arbeitsbereich FEM

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Revision as of 09:31, 6 April 2019 by FuzzyBot (talk | contribs) (Updating to match new version of source page)

Introduction

Der Arbeitsbereich FEM ermöglicht die effiziente Bearbeitung einer Finiten Element Analyse (FEA) innerhalb von FreeCAD. Es stehen alle Werkzeuge zur Durchführung einer Finiten Element Analyse in einer Benutzeroberfläche zur Verfügung.

Workflow

Die Arbeitsschritte zur Erstellung einer FEA in dem FreeCAD-FEM-Arbeitsbereich umfassen:

  • Vorbereiten (Preprocessing)
    • Erstellen einer Geometrie, hierzu werden die in FreeCAD vorhandenen Werkzeuge außerhalb des FEM-Arbeitsbereiches benutzt.
    • Anlegen einer Analyse:
      • Erzeugen eine FEM-Netzes aus dem geometrischen Modell.
      • Einwirkende Lasten sowie Halterungen dem Modell hinzufügen.
      • Eine Materialdefinition mit der Geometrie verknüpfen
  • Lösen
    • Innerhalb der FreeCAD-Oberfläche die Lösung des Gleichungssystems starten.
  • Nachbereiten (Postprocessing)
    • Anzeige der Ergebnisse innerhalb in FreeCAD.

As of FreeCAD 0.15 the FEM Workbench can be used on Linux, Windows, and Mac OSX. Since the workbench makes use of external solvers, the amount of manual setup will depend on the operating system that you are using. See FEM Install for instructions on setting up the external tools.

Menu: Model

  • Analysis container: Creates a new container for a mechanical analysis. If a solid is selected in the tree view before clicking on it, the meshing dialog will be opened next.

Materials

Element Geometry

Electrostatic Constraints

Fluid constraints

Mechanical constraints

  • Constraint force: Used to define a force in [N] applied uniformly to a selectable face in a definable direction.

Thermal constraints

Menu: Mesh

  • Nodes set: Creates/defines a node set from FEM mesh.

Menu: Solve

  • Solver Calculix CCX tools: Creates a new solver for this analysis. In most cases the solver is created together with the analysis.

Menu: Results

  • Result show: Used to display the result of an analysis.

Menu: Utilities

Context Menu

Preferences

Tutorials

Tutorial 1 FEM CalculiX Cantilever 3D

Tutorial 2 FEM Tutorial

Tutorial 3 FEM Tutorial Python

Tutorial 4 FEM Shear of a Composite Block

Coupled thermal mechanical analysis tutorials PDF's

Video Tutorial 1 Forum post with you tube link

Video Tutorial 2 Forum post with you tube link

Further video Tutorials Forum post with you tube link

Links

FEM Install for a detailed description how to set up a working FEM Module.

FEM Mesh for further Information about the FEM Mesh in FEM Module.

FEM Solver for further Informations about FEM Solvers in FEM Module,

FEM CalculiX for further Information about CalculiX, the most used and best develop solver in FEM Module.

FEM Project for more detailed informations about the Units, Limitations and the Development of FEM Module.

FEM Concrete for informations about analysis's of concrete structures.