舱室在爆炸冲击载荷作用下的结构毁伤研究

为了研究舰船舱室在反舰导弹作用下的毁伤效果,模拟典型舱室进行数值仿真。分析了爆轰波和冲击波的破坏模式,研究了在爆炸冲击载荷作用下的舱室响应过程;同时结合材料失效原理,给出破坏准则。数值模拟结果表明:舱室是封闭空间,弹药爆炸产生的爆轰波和冲击波在舱壁面上多次反射;由于角隅部位汇聚冲击波而受到的超压作用要大于舱室壁面,所以破坏的部位首先出现在甲板中心到与围壁之间的角隅部位。舱室的主要破坏模式是沿着角隅部位开裂,最终舱室发生解体。通过模拟不同厚度的舱室结构可知,装药量一定时,舱壁越厚舱室抗爆能力越强。

Studies on damage effect of cabin structure subjected to the explosion impulsion load

In order to research the damage effect of ship cabin under the anti-ship missile action, the typical cabin is imitated by using numerical simulation. Destruction model of detonation wave and shock wave is analyzed and the respond process of cabin under the explosion shock load effect is studied; The destroy norm is given combined the material inefficacy principle at the same time. The numerical simulation result indicates: as a closed space, the detonation wave and the shock wave of ammunition explodes reflects on the bulkhead in cabin many times; Overpressure effect of the corner position that suffered by shock waves will be more than the cabin bulkhead, as a result of the position which destroyed firstly appears at the center; So the mainly destruction model of cabin is cracked along the position in corner until the cabin is disintegrated finally. The powder charging capacity is fixed, the thick cabin ability is stronger than the thin by way of imitating the different thickness cabin structure.