Abstract
This paper presents theory and application examples of a
mathematical model for rapid prediciton of damage to both the side
structure of a struck vessel and the bow of a striking vessel in a
collision event.The geometry of the bow of the striking ship is
idealised such that it can be described by only few parameters,
still covering with sufficient accuracy almost all existing ship
bows with and without bulbs.The model for the internal mechanics
of the struck ship side is based on a set of so-called
superelements. Each super-element represents an assembly of
structural components and contains solutions for the structural
behaviour of this assembly under deep collapse. By suming up the
crushing force of each super-element, it is possible to determine
the total contact load between the two involved ships.A number of
parameter studies are presented where the sensitivity of the
damage to the loading conditions and striking positions are
illustrated. Furthermore, the difference between longitudinal and
transverse bow stiffening has been examined. Transversely
stiffened bows are shown to be significantly softer than
longitudinally stiffened bows.Thirty collision events with five
different striking vessels and six different struck vesels have
been examined. The examples illustrate that the ususal assumption
of a rigid bow only holds true for certain categories of struck
and striking vessels.
Original language | English |
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Title of host publication | SSC/SNAME/ASNE Symposium |
Publication date | 2000 |
Publication status | Published - 2000 |