舰船静置爆炸气泡时总纵强度计算方法研究

新型"大气泡能"概念武器在水下爆炸能产生大气泡,对船体总纵强度造成很大影响,有可能使舰体发生纵向折断或倾覆。为研究这种作用,建立了舰船静置爆炸气泡时总纵弯曲强度的理论计算方法。采用静置爆炸气泡的假设,将气泡产生的浮力损失和压力差转化为等效载荷,计算气泡作用后船体的总纵弯矩和剪力并进行强度校核。以某舰艇为例进行计算,结果表明,爆炸气泡作用下船体的剪力和弯矩比静浮状态增大很多,船体发生纵向折断破坏的危险性也随之增大。

Study on longitudinal strength calculation method of hull standing above an explosion bubble

A kind of new concept weapon,which has more proportion of bubble energy in its total energy,can make a big underwater explosion bubble and break the ship,so a method is developed for calculating the longitudinal strength of the hull above the explosion bubble.On the assumption that the hull is standing calmly above the explosion bubble,the loss of buoyancy and the difference of pressure caused by bubble will be turned into the equivalent load,the total longitudinal warp moment and shearing force can be calculated,and the longitudinal strength will be verified.Take the calculation of a ship for an example: when an explosion bubble is working on the ship,the shearing force and warp moment will be greatly bigger than that of the ship without the bubble,as a result,the ship may be easier to be broken up.