Sandbox_Add_FEM_Solver_Tutorial.md

Sandbox:Add FEM Solver Tutorial

{{TutorialInfo |Topic= Add FEM Solver |Level= |Time= |Author=M42kus |FCVersion= |Files= }}

Introduction

In this tutorial we will take the Mystran solver as an example to show how to add a solver to FreeCAD. Please make sure you have read and understood Extend FEM Module before reading this tutorial. The detail of adding the Mystran Solver to FreeCAD master: https://github.com/FreeCAD/FreeCAD/compare/a03eb6b9625ba...dfc01ec949525

The task can be split into seven parts:

• Mesh exporter. Write out Mesh or Case file from FreeCAD to the solver.
• Results importer. Read the solver's result file back to FreeCAD.
• Solver object. Needs changes in solver settings, unit tests, ObjectsFem modules as well.
• Task and writer module. Here is where the main solver input writing happens.
• Gui tool to create a solver.
• Gui preference tab to set the solver binary path.
• A solver input writing unit test. Best to take the ccx cantilever. This is available for all mesh element types.

FEM Sandbox

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