MecFem

Status:

• MecFEM: Working, but features to be added
• app: in development

Next steps

• Add external forces to the solvers (limited to volumetric with no spacial dependence for now)
• Add tangent matrices for external and volumetric forces to the non-linear solver (currently only the internal forces are considered in the tangent matrix)
• Validation of solver (done partially, but more cases to be analyzed)
• Add sparse matrix compatibility to the solvers (currently using dense matrices, which is not efficient for large problems)
• Add support for 3d problems in the post-processing (currently only 2d problems are supported) --> Possibly PyVista although it is not yet supported in Flet
• Finish the app (currently waiting for Matplotlib to be supported in Flet - bug reported in Flet repo)
• Finish documentation

Summary

Finite element solver for mechanical problems. The code allows to solve up to 3D problems (although the post-processing is currently limited to 2D problems) and includes a GUI built with Flet for easy interaction.

There are two main solvers:

• Linear: Solves a linear system, where the stiffness matrix is constant and loads can be applied.
• Non-linear: Solves a non-linear system using the Newton-Raphson method, where the residual and tangent matrix depends on the current solution and the load is applied in increments.

Directories Structure

• src/MecFEM/ - Core finite element library
• app/ - GUI application built with Flet
• examples/ - Example scripts demonstrating how to use the MecFEM library
• test/ - Some tests for MecFEM library
• docs/ - Documentation files. A pdf with the documentation is also available in the root of the repository.

Installation

Clone the repository

git clone https://github.com/GabrielJezler/MecFem.git
cd MecFem

Run flet app

• Install MecFEM as editable package (in the root of the repository)

pip install -e .

• Run the app

cd app
flet run