Difference between revisions of "FEM FrontISTR Workbench"

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# Set up an analysis model by FEM module (in the same way as calculiX).
 
# Set up an analysis model by FEM module (in the same way as calculiX).
# Switch module to "FrontISTR" and create a FrontISTR solver object.
+
# Switch to the workbench '''FrontISTR''' and create a FrontISTR solver object by clicking on the toolbar button [[Image:FEM_SolverCalculixCxxtools.svg|24px]].
 
# Open the task panel of SolverFISTRTools and set working directory.
 
# Open the task panel of SolverFISTRTools and set working directory.
 
# Click "Write input file"
 
# Click "Write input file"

Revision as of 20:45, 5 June 2021

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FEM FrontISTR Workbench icon

Introduction

The FrontISTR.svg FEM FrontISTR Workbench is a FreeCAD addon that enables FrontISTR, an open-source large-scale parallel FEM program for nonlinear structural analysis.

FEM FrontISTR bikeframe screenshot.png

Intended work-flow

  1. Set up an analysis model by FEM module (in the same way as calculiX).
  2. Switch to the workbench FrontISTR and create a FrontISTR solver object by clicking on the toolbar button FEM SolverCalculixCxxtools.svg.
  3. Open the task panel of SolverFISTRTools and set working directory.
  4. Click "Write input file"
  5. Click "Run FrontISTR"
  6. Check FISTR_Results for post processing.

Features

  • static analysis, element check
  • geometrical linear|nonlinear analysis
  • elements: 1st/2nd order tetrahedron
  • loads: mechanical concentrated and distributed loads, gravity
  • boundary: points fixed or displacement
  • step control: auto time increment and cutback
  • linear equation solver
    • iterative
      • preconditioner: AMG, SSOR, Diagonal, ILU(k)(k=0,1,2)
      • method: CG, BiCGSTAB, GMRES, GPBiCG
    • direct: MUMPS
  • output file format: AVS, VTK(paraview required)

Features to be supported in the future

  • analysis: thermal transfer, dynamic, eigen, frequency
  • materials(mechanical): elastoplastic, hyper elastic, creep, visco elastic
  • contact
  • MPC(TIE)
  • elements: prism, hexa, beam, shell, truss etc.

Limitations

  • FISTR_Results only contains results for surfaces. If you need the interior results, change Output File Format to VTK and visualize the results with paraview.

Benchmark results

See https://github.com/FrontISTR/FEM_FrontISTR/tree/master/sample/benchmarks.

Installation

Addon Manager

FEM_FrontISTR can easily be installed via the FreeCAD AddonManager.svg Addon Manager from the Tools → Addon manager menu. FEM_FrontISTR is under active development and will get new features frequently. Therefore you should update it regularly using also the menu Tools → Addon manager. The FEM_FrontISTR code is hosted and developed on GitHub.

Manual

See How to install additional workbenches

Prerequisites

FrontISTR Solver Installation

FrontISTR binaries will be automatically downloaded and installed on the first run. If the download does not proceed, please follow the steps below to install the solver.

Windows

  1. Download FrontISTR-latest.zip
  2. Create directory FEM_FrontISTR/bin
  3. Extract FrontISTR-latest.zip and put all files in FEM_FrontISTR/bin directory.

Linux

Under preparation.

Mac

Under preparation.

Tools

References