The computational grid is represented by Domain class.
It stores all the components of the FEM model. These are dof managers
(nodes, element sides possessing DOFs), elements, material and cross
section models, boundary conditions
(primary boundary conditions as well as applied loading), and initial
conditions. For every component type the Domain maintains the
component list and provides the corresponding access services.
Domain keeps its number and link to associated problem (EngngModel).
It also keeps its domain type, which determines the default number of
Dofs per node (or side) and their physical meanings. Note, that this
default setting can be redefined by particular nodes or sides.
The basic services provided by Domain are the following
- Reading its description from input and creating corresponding objects.
This task includes the reading and parsing the particular mesh input
records, creating the corresponding components representations
(objects) of appropriate type, initializing these components using
theirs instanciteFromString methods and storing them into
corresponding list.
- Provides services for accessing its particular components.
The services returning the total number of particular domain
components and particular component access methods based on component
number are provided.
Domain also contains instance of OutputManager manager class,
which implements the output filtering capabilities. It allows to
filter output for specific solution steps, elements and dof managers.
The domain also can create (if needed) instances of
SpatialLocalizer class and connectivityTable class
to serve the connectivity and spatial localization related services
(finding elements shared by the node, finding the closest node search,
finding the element containing given point, etc.).
Borek Patzak
2018-01-02
