CAJ | 학술논문

为了抵御水下武器对舰船结构的毁伤，大型水面舰船在舷侧要设置多层防护结构。针对破片对防护水舱的毁伤情况以及破片穿透水舱的剩余特性问题，应用ABAQUS软件，采用耦合欧拉-拉格朗日方法，数值模拟了不同形状、不同质量、不同长细比的爆炸破片穿透舰船舷侧防护水舱，特别是背水钢板的演变过程。通过对数值试验结果的分析得到了爆炸破片穿透舷侧防护水舱剩余特性的规律。研究表明，球状破片的剩余速度要比柱状破片的剩余速度大得多，并且破片细长比也是影响破片剩余速度的重要因素。
위료저어수하무기대함선결구적훼상，대형수면함선재현측요설치다층방호결구。침대파편대방호수창적훼상정황이급파편천투수창적잉여특성문제，응용ABAQUS연건，채용우합구랍-랍격랑일방법，수치모의료불동형상、불동질량、불동장세비적폭작파편천투함선현측방호수창，특별시배수강판적연변과정。통과대수치시험결과적분석득도료폭작파편천투현측방호수창잉여특성적규률。연구표명，구상파편적잉여속도요비주상파편적잉여속도대득다，병차파편세장비야시영향파편잉여속도적중요인소。
In this paper,the process of underwater explosion is analyzed by employing fragments of differ-ent shapes,mass and slenderness ratio. Particularly,the penetration damage to the protective water tanks on the side shell(especially to backwater plates)is numerically simulated using ABAQUS and the Cou-pled Eulerian-Lagrange(CEL)method. Also,the residual characteristic of the fragment after the penetra-tion of water tanks is discussed. It is observed that the residual velocity of spherical fragments is much larg-er than that of cylindrical fragments,and the slenderness ratio of fragments is a crucial factor that influenc-es the residual velocity.