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Program Design
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The goal is to create an object-oriented Finite Element Analysis program that

1. is based on the finite element method
#. handles arbitrary trusses in 2D
#. allows for arbitrary loading
#. can plot its undeformed and deformed shape

The program will need and use the following objects:

.. toctree::
    :maxdepth: 3

    design/mesher.rst
    design/node.rst
    design/element.rst
    design/material.rst
    design/system.rst
    design/solver.rst
    design/plotter.rst