FEM Module/zh

From FreeCAD Documentation
Revision as of 21:42, 4 April 2019 by FuzzyBot (talk | contribs) (Updating to match new version of source page)
Jump to: navigation, search
Other languages:
čeština • ‎Deutsch • ‎English • ‎español • ‎français • ‎hrvatski • ‎Bahasa Indonesia • ‎italiano • ‎日本語 • ‎português • ‎português do Brasil • ‎română • ‎русский • ‎svenska • ‎Türkçe • ‎中文 • ‎中文(中国大陆)‎

Workbench FEM.svg

Introduction

The FEM Workbench provides a modern finite element analysis (FEA) workflow for FreeCAD. Mainly this means all tools to make an analysis are combined into one graphical user interface (GUI).

FemWorkbench.jpg

Workflow

The steps to carry out a FE analysis are:

  1. Preprocessing: setting up the analysis problem.
    1. Modeling the geometry: creating the geometry with FreeCAD, or importing it from a different application.
    2. Creating an Analysis.
      1. Creating a finite element Mesh for the geometrical model.
      2. Adding Constraints such as loads and fixed supports to the model.
      3. Adding a Material to the analysis model.
  2. Solving: solving a system of equations using an external solver from within FreeCAD.
  3. Postprocessing: visualizing the analysis Results from within FreeCAD.

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

Menu: Model

  • Fem-analysis.svg 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

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

Thermal constraints

Menu: Mesh

  • Fem-femmesh-create-node-by-poly.svg Nodes set: Creates/defines a node set from FEM mesh.

Menu: Solve

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

Menu: Results

  • Fem-result.svg 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.