舰艇破损剩余强度反分析研究

Inverse analysis of residual strength for damaged ship hull

基于塑性理论,提出了一个新的校核舰艇剩余强度的方法.以激光炸弹、反舰导弹和鱼雷为典型攻击武器.在破口大小和位置给定的情况下,根据破损部位的不同,分别对舰艇主船体结构在水线以上破损和在水线以下破损后的舰体剩余强度进行计算.考虑在多发不同武器命中的情况,计算了对应武器若干发命中后的损伤后果.通过反分析方法分析了船体梁的剩余强度,依据极限承载能力提出了判别船体梁是否失效的依据,并给出了结构失效时所需的破损条件和对应武器命中发数.

A new method has been suggested using the theory of plasticity to evaluate the residual strength of a ship damaged by such typical attacking weapons as laser bombs,missiles and torpedos.On the assumption that the dimension of damage area and plastic region has been known, the residual strength of the hull is computed for the damages above and below the waterline with the effect of different weapon types and the consequence of hits by a number of weapons taken into consideration.By inverse analysis of residual strength ,criteria have been established for determination of ship hull collapse.