FEM Analysis

Next: Material for solid

FEM

FEM Analysis
Menu location
Model → Analysis container‏‎
Workbenches
FEM
Default shortcut
S A
Introduced in version
-
See also
FEM tutorial

Description

The FEM Analysis could be seen as a Container that holds all objects of a Finite Element Analysis. It is mandatory to have a analysis container which holds all the needed objects. At least one of the following objects is needed for a mechanical analysis:

• material
• fixed constraint
• force constraint or pressure constraint

Usage

1. There are several ways to invoke the command:
   • Press the FEM Analysis button.
   • Select the Model → Analysis container‏‎ option from the menu.
   • Use the keyboard shortcut: S then A.
2. A new Analysis is created and set to active.
3. Other objects could be added or removed to the analysis container by drag and drop.
4. To add new FEM Objects to the document the analysis has to be active. Double click on the analysis does activate the analysis.

Options

• Up to date there is no option to choose.
• A frequency analysis in in development. See [1] for more informations.

Properties

• DataOutpuDir: Specifies the working directory of the analysis

Scripting

most code here is depreciated in 0.17.

• new analysis

MechanicalAnalysis.makeMechanicalAnalysis( name )

• add object to the analysis

App.ActiveDocument.MechanicalAnalysis.Member = App.ActiveDocument.MechanicalAnalysis.Member + [ (object) ]

• remove object from the analysis

member = App.ActiveDocument.MechanicalAnalysis.Member
member.remove( documentobject )
 App.ActiveDocument.MechanicalAnalysis.Member = member

Examples:

import MechanicalAnalysis
analysis = MechanicalAnalysis.makeMechanicalAnalysis("MechanicalAnalysis")
FemGui.setActiveAnalysis(analysis)

addobj = App.ActiveDocument.getObject("MechanicalMaterial")
App.ActiveDocument.MechanicalAnalysis.Member = App.ActiveDocument.MechanicalAnalysis.Member + [addobj]

removeobj = App.ActiveDocument.getObject("MechanicalMaterial")
member = App.ActiveDocument.MechanicalAnalysis.Member
member.remove(removeobj)
App.ActiveDocument.MechanicalAnalysis.Member = member

Next: Material for solid

FEM

FEM

• FEM Analysis

• Materials: Solid, Fluid, Nonlinear mechanical; Material editor

• Element geometry: Beam (1D), Beam rotation (1D), Shell (2D), Fluid flow (1D)

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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

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• Mesh: Mesh Netgen, Mesh GMSH, Mesh boundary layer, Mesh region, Mesh group, Nodes set, Mesh to mesh

• 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, Warp filter, Scalar clip filter, Function cut filter, Region clip filter, Line clip filter, Stress linearization plot, Data at point clip filter, Create functions

• Utilities: Clipping plane, Remove clipping planes; Mesh clear, Mesh display info

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• 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

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• 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

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• Addons: Addon Manager, External workbenches, Scripting and macros

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• Hubs: User hub, Power users hub, Developer hub