FEM Workbench/it

Introduzione
Il Modulo FEM offre a FreeCAD un moderno flusso di lavoro per l'analisi agli elementi finiti (FEA). Questo significa che tutti gli strumenti per fare una analisi degli elementi finiti sono combinati in una GUI.



Workflow
I passi per eseguire una FEA nell'interfaccia grafica del modulo FEM di FreeCAD sono:
 * Pre-elaborazione
 * Modellare la geometria.
 * Creare una Analisi:
 * Creare una mesh FEM dal modello geometrico.
 * Aggiungere i vincoli quali i carichi e i supporti al modello da analizzare.
 * Aggiungere un materiale per il modello da analizzare
 * Risoluzione
 * Risolvere il sistema di equazioni all'interno della GUI di FreeCAD.
 * Post-elaborazione
 * Osservare i risultati nella GUI di FreeCAD.

Dalla versione 0.15 di FreeCAD, il modulo FEM può essere usato su piattaforme Windows, Mac OSX e Linux. Dato che il modulo FEM utilizza del software esterno, la quantità di interventi manuali dipende dal sistema operativo che si sta utilizzando. Consultare la pagina Installare FEM.

Menu Modello

 * [[Image:Fem-analysis.svg|32px]] Contenitore analisi: Crea un nuovo contenitore per una analisi meccanica statica. Se invece, prima di cliccare su questo strumento, viene selezionato un solido nella vista ad albero si apre la finestra di meshing.

Materials

 * [[Image:Fem-material.svg|32px]] Material for solid: Lets you select a material from the database.


 * [[Image:Fem-material-fluid.svg|32px]] Material for fluid: Lets you select a material from the database.


 * [[Image:Fem-material-nonlinear.svg|32px]] Nonlinear mechanical material: Lets you select a material from the database.


 * [[Image:Arch_Material_Group.svg|32px]] Material editor:: Lets you open the material editor to edit materials

Element Geometry

 * [[Image:Fem-beam-section.svg|32px]] Beam cross section:


 * [[Image:Fem-beam-rotation.svg|32px]] Beam rotation:


 * [[Image:Fem-shell-thickness.svg|32px]] Shell plate thickness:


 * [[Image:Fem-fluid-section.svg|32px]] Fluid section for 1D flow:

Electrostatic Constraints

 * [[Image:fem-constraint-electrostatic-potential.svg|32px]] Constraint electrostatic potential:

Fluid constraints

 * [[Image:Fem-constraint-initial-flow-velocity.svg|32px]] Constraint initial flow velocity:


 * [[Image:Fem-constraint-fluid-boundary.svg|32px]] Constraint fluid boundary:


 * [[Image:Fem-constraint-flow-velocity.svg|32px]] Constraint flow velocity:

Mechanical constraints

 * [[Image:Fem-constraint-fixed.svg|32px]] Constraint fixed: Used to define a fixed constraint on point/edge/face(s).


 * [[Image:Fem-constraint-displacement.svg|32px]] Constraint displacement: Used to define a displacement constraint on point/edge/face(s).


 * [[Image:Fem-constraint-planerotation.svg|32px]] Constraint plane rotation: Used to define a plane rotation constraint on a planar face.


 * [[Image:Fem-constraint-contact.svg|32px]] Constraint contact: Used to define a contact constraint between two faces.


 * [[Image:Fem-constraint-transform.svg|32px]] Constraint transform:


 * [[Image:Fem-constraint-force.svg|32px]] Constraint force: Used to define a force in [N] applied uniformly to a selectable face in a definable direction.


 * [[Image:Fem-constraint-pressure.svg|32px]] Constraint pressure: Used to define a pressure constraint.


 * [[Image:Fem-constraint-selfweight.svg|32px]] Constraint self weight: Used to define a gravity acceleration acting on a model.


 * [[Image:Fem-constraint-bearing.svg|32px]] Constraint bearing: Used to define a bearing constraint.


 * [[Image:Fem-constraint-gear.svg|32px]] Constraint gear: Used to define a gear constraint.


 * [[Image:Fem-constraint-pulley.svg|32px]] Constraint pulley: Used to define a pulley constraint.

Thermal constraints

 * [[Image:Fem-constraint-InitialTemperature.svg|32px]] Constraint initial temperature: Used to define the initial temperature of a body.


 * [[Image:Fem-constraint-heatflux.svg|32px]] Constraint heatflux: Used to define a heat flux constraint on a face(s).


 * [[Image:Fem-constraint-temperature.svg|32px]] Constraint temperature: Used to define a temperature constraint on a point/edge/face(s).


 * [[Image:Fem-constraint-heatflux.svg|32px]] Constraint body heat source:

Menu: Mesh

 * [[Image:Fem-femmesh-netgen-from-shape.svg|32px]] FEM mesh from shape by Netgen:


 * [[Image:Fem-femmesh-gmsh-from-shape.svg|32px]] FEM mesh from shape by GMSH:


 * [[Image:Fem-femmesh-boundary-layer.svg|32px]] FEM mesh boundary layer:


 * [[Image:Fem-femmesh-region.svg|32px]] FEM mesh region:


 * [[Image:Fem-femmesh-from-shape.svg|32px]] FEM mesh group:


 * [[Image:Fem-femmesh-create-node-by-poly.svg|32px]] Nodes set: Creates/defines a node set from FEM mesh.


 * [[Image:Fem-femmesh-to-mesh.svg|32px]] FEM mesh to mesh: Convert the surface of a FEM mesh to a mesh.

Menu: Solve

 * [[Image:Fem-solver.svg|32px]] Solver Calculix CCX tools: Creates a new solver for this analysis. In most cases the solver is created together with the analysis.


 * [[Image:Fem-solver.svg|32px]] Solver CalculiX:


 * [[Image:Fem-elmer.svg|32px]] Solver Elmer:


 * [[Image:Fem-solver.svg|32px]] Solver Z88:


 * [[Image:Fem-equation-heat.svg|32px]] Equation heat:


 * [[Image:Fem-equation-elasticity.svg|32px]] Equation elasticity:


 * [[Image:Fem-equation-electrostatic.svg|32px]] Equation electrostatic:


 * [[Image:Fem-equation-fluxsolver.svg|32px]] Equation fluxsolver:


 * [[Image:Fem-equation-flow.svg|32px]] Equation flow:


 * [[Image:Fem-control-solver.svg|32px]] Solver job control: Opens the menu to adjust and start the selected solver.


 * [[Image:Fem-run-solver.svg|32px]] Solver run calculation: Runs the selected solver of the active analysis.

Menu: Results

 * [[Image:Fem-purge-results.svg|32px]] Results purge: Deletes the results of the active analysis.


 * [[Image:Fem-result.svg|24px]] Result show: Used to display the result of an analysis.


 * [[Image:FEM_PostApplyChanges.png|32px]] Post Apply changes:


 * [[Image:Fem-data.svg|32px]] Post Pipeline from result:


 * [[Image:Fem-warp.svg|32px]] Post Create warp vector filter:


 * [[Image:Fem-clip-scalar.svg|32px]] Post Create scalar clip filter:


 * [[Image:Fem-cut.svg|32px]] Post Create cut filter:


 * [[Image:Fem-clip.svg|32px]] Post Create clip filter:


 * [[Image:Fem-DataAlongLine.svg|32px]] Post Create data along line filter:


 * [[Image:Fem-linearizedstresses.svg|32px]] Post Create linearized stresses:


 * [[Image:fem-post-filter-data-at-point.png|32px]] Post Create data at point filter:


 * [[Image:Fem-sphere.svg|32px]] Post Create functions:

Menu: Utilities

 * [[Image:fem-clipping-plane-add.svg|32px]] Clipping plane on face:


 * [[Image:fem-clipping-plane-remove-all.svg|32px]] Remove all clipping planes:

Context Menu

 * [[Image:Fem-femmesh-clear-mesh.svg|32px]] FEM mesh clear:


 * [[Image:Fem-femmesh-print-info.svg|32px]] FEM mesh print info:

Preferences

 * [[Image:Std_DlgParameter.svg|32px]] Preferences...: Preferences available in FEM Tools.

Tutorial
Tutorial 1 FEM CalculiX Cantilever 3D

Tutorial 2 Tutorial di FEM

Tutorial 3 FEM Tutorial Python

Tutorial 4 FEM Shear of a Composite Block

Tutorial di analisi meccaniche termiche in PDF

Video Tutorial 1 Post sul forum con il link a YouTube

Video Tutorial 2 Post sul forum con il link a YouTube

Futuro video Tutorials Post sul forum con il link a YouTube


 * Estendere il modulo FEM
 * Tutorial Aggiungere equazioni FEM
 * Tutorial Aggiungere vincoli FEM

Link
Installare FEM Per una descrizione dettagliata di come impostare un modulo FEM funzionante.

Mesh FEM Per ulteriori informazioni su Mesh FEM nel modulo FEM

FEM Solver per ulteriori informazioni su FEM Solvers nel modulo FEM,

FEM CalculiX per ulteriori informazioni su CalculiX, il solutore più utilizzato e piùsviluppato nel modulo FEM.

Progetto FEM per informazioni più dettagliate circa le Unità, i Limiti e lo Sviluppo del modulo FEM.

FEM Concrete per informazioni su analisi di strutture in calcestruzzo.