Ppanparts

PPANPARTS is the module that normally extracts parts from the hull model (both plate and profile parts). A variant of this module has been established to be executed in "panel line mode" (cf. above). When executed in this way the result consists of both piece parts and assembly parts. In panel line mode PPANPARTS can be used to extract assembly parts also from (almost) planar shell panels, generated in the module for shell panels.

When determining the shrinkage additions for assembly parts, the first plate thickness (the thickness from the individual plate with lowest attribute number within the part) will by default be used. However, the user has the possibility, via a logical name, to control the thickness to be used. The name of the logical name is:

SBH_PLCM_SHRINK_PLATE

The following three different values are valid:

1. FIRST

   Like today

2. FREQUENT

   The most frequent thickness will be used

3. MEAN

   Take the mean thickness of all individual plates

Curved panels (almost planar ones) are temporarily converted to plane panels to be able to create the assembly parts. When defining the panel plane of this temporary plane panel, PPANPARTS acts in the following way:

4. If the logical name SBH_CPAN_PLANE_PLATE has been defined and points to a plate number, use this plate to defined the nominal panel plane.

5. If not item 1 is fulfilled, get the first "absolute plane" plate with assembly defined.

6. If neither item 1 nor item 2 are fulfilled, create the nominal panel plane via the first three corner points of the panel.

To accept a curved panel for PLCM, there is a check for maximum deviation of the corner points of the panel. The distances are measured from the created panel plane. The maximum allowed deviation is by default 50 mm. It might be overridden by the logical name SBH_CPAN_MAXDEV.