Idealized Model

The creation of the FE model in AVEVA Marine is divided in two steps. In the first step a portion of the model is selected by collecting blocks and/or panels and optionally setting a bounding box. The result is a new kind of block containing idealized panels. Panels from multiple blocks can be represented by one idealized block.

In this step also the level of idealization is defined from a rich selection of parameters. A number of parameter sets can be combined and saved for different levels. They contain for example, the intended shell element size, discrimination of insignificant components on size and maximum distances for stiffeners to snap to surrounding elements.

Figure 6:2. Ordinary panels

In the idealized panels the insignificant components are removed and definition may be changed compared to the original panel. The geometry of the panels is based on the moulded planes of referred panels as if they had no thickness. Also the stiffeners appear to have no cross-section. If a bounding box was defined during the creation of the model only a part of the panel may remain.

The idealized panel is displayed in a special way on the drawing canvas to separate it from ordinary panels. Plate surfaces are semi-transparent and stiffeners and flanges are just contours.

It is possible to make adjustments to the idealized panels using the scheme editor as for ordinary panels.

Figure 6:3. Idealized panels

Curved panels are not handled in the same way as plane panels. They are only used to

• get the geometry of holes in curved surfaces as there is no special object holding this information;

• calculate the bounding box for the FE model when no box is explicitly given (or when this box exceeds the panels' extension).

It is not mandatory to have curved panels either to create the FE model as the portion of the curved surface(s) to be modelled is determined by the plane panels' trace curves where the panels intersect the surface.

The curved panel differ from the planar panel in that it is just a collection of components which do not even need to be geometrically connected at all. A curved panel can also consist of stiffeners without any plating. Or curved panels are not used at all, only curved plates and shell profiles.

Refer to Running the FE Modelling Process for further information.