Pre-processing
==============

Pre-processing is where you describe the physics.  Given a mesh, you
stamp element types, materials, real constants, and boundary
conditions onto it — the output is a :class:`~femorph_solver.Model` that
can produce global sparse :math:`K` and :math:`M`.

.. grid:: 1 2 2 2
    :gutter: 3

    .. grid-item-card:: The Model
        :link: model
        :link-type: doc

        How to build a :class:`~femorph_solver.Model` from a pyvista grid
        or from scratch with MAPDL-style verbs.

    .. grid-item-card:: Element library
        :link: elements/index
        :link-type: doc

        The catalogue of registered elements, how to pick one, and
        the per-element theory / KEYOPT reference.

    .. grid-item-card:: Materials
        :link: materials
        :link-type: doc

        The ``MP`` command, supported property names, and the
        :class:`~femorph_solver.MaterialProperty` enum.

    .. grid-item-card:: Real constants
        :link: real-constants
        :link-type: doc

        Per-element geometric data: shell thickness, beam cross-section,
        spring constants, point masses.

    .. grid-item-card:: Boundary conditions and loads
        :link: boundary-conditions
        :link-type: doc

        :meth:`Model.d` for Dirichlet, :meth:`Model.f` for nodal forces /
        moments, and the ``prescribed=`` argument on the solvers.

.. toctree::
    :hidden:
    :maxdepth: 2

    model
    elements/index
    materials
    real-constants
    boundary-conditions