舰艏结构的碰撞损伤性能研究

Study on bow's collision damage behavior of naval ship

船舶碰撞事故往往会引起被撞船的船体结构严重损坏,并且威胁船上人员的生命安全。在船—船碰撞中被撞船的损伤程度取决于两个方面:一是舷侧结构的碰撞性能;二是撞击船艏结构的相对刚度。船舶的艏部结构刚度一般远远高于舷侧结构的刚度,在船舶碰撞研究时,通常将撞头理想化为刚体,不考虑其损伤变形和能量吸收,这样做实际上过于保守。本文针对舰船,主要研究舰艏结构的碰撞损伤特性,将撞击舰艏作为可变形结构进行数值仿真研究,得到了一些艏部变形的规律。

Ship collision is a dangerous accident that might cause the damage of struck hull structure and threaten crew＇s security.There are two aspects which struck ship＇s damage depend on as follows：the one is collision behavior of struck ship＇s side,and the other is the relative rigidity of striking ship.The bow rigidity is usually much higher than side structure ＇s,and so it is often regarded as a rigid body without distortion and energy absorption.In fact this means is too conservative.Aiming at naval ship,the bow＇s damage behavior is studied,considering its real structure and distortion.Some useful results are found by the simulation analysis.