The purpose of this paper is to investigate the effectiveness of a prototype buffer bulbous bow structure in ship-ship collisions as compared with that of standard bulbous bows. A series of large-scale finite element analyses were carried out using LS-DYNA in the collision scenario where a VLCC (Very Large Cruide Carrier) in ballast condition collides with the midship of another double-hull VLCC in laden condition. The effect of the equivalent failure strain and the forward velocity of the struck ship on the results of simulation were investigated. Collapse modes, contact forces and energy absorption capabilities of the buffer bows are compared with those of conventional bows. This study found that, in the collision case of 90 degree without forward velocity of the struck ship, the critical striking velocity for the buffer bow becomes about 77% higher than that for a standard bow. It could be said that the buffer bow is effective in reducing the damage to a struck ship in case of collisions.
Effects of buffer bow structure in ship-ship collision
Einflüsse einer Puffer-Bugwulstkonstuktion bei einer Schiffskollision
International Journal of Offshore and Polar Engineering ; 18 , 2 ; 133-141
2008
9 Seiten, 23 Quellen
Article (Journal)
English