Structure and geometry

The following list summarizes the basic structure and hierarchy of the NAPA Steel model:

structure arrangement
main object
opening
stiffener
bracket
hole in stiffener
seam
plate
surface boundary

The following list summarizes the basic structure and hierarchy of the CADMATIC Hull model:

block
plate
hole
cutout
slot
seam
corner hole
profile
flange/face plate
bracket
shell frame
shell plate

The following table gives an overview of how the entities of a NAPA Steel model are converted to the entities of a CADMATIC Hull model:

NAPA Steel	CADMATIC Hull
Structure arrangement	-
Main object	One or more plates
Main object (part of the shell)	Shell plates. Each plate of the main object (split by seams) is converted to a separate shell plate.
Stiffeners	Profiles (straight or bent) and pillars (straight or bent)
Stiffeners (main object is part of shell)	Shell frames
Boundary stiffeners	Face plates (straight or bent)
Openings	Standard holes
Reductions	Arbitrary holes
Openings (main object is part of shell)	Lines in the shape database
Brackets	Brackets
Seams	Seams (soft seams are imported to Hull)
Cutouts	Cutouts
Surface boundary	Shell plates, defined either as fixed values or Hull boundary lines.

The NAPA Steel model can be divided into building blocks by using a block system. These building blocks are equivalent to CADMATIC Hull building blocks. The NAPA Steel model is transferred to CADMATIC Hull one building block at a time, with the possibility to select which object(s) are transferred.