推导出水下爆炸作用下结构响应的微分方程及其解。根据耐压壳体塑性耗尽破损的准则分别计算不同情况下的破坏半径,以此研究影响破坏半径的因素。计算结果表明,相同当量条件下两点同时(或延时)爆炸显著提高(或减少)破坏半径;随着TNT当量的增加,破坏半径近似线性递增;爆心的方位角在60°以内影响较大而潜深在大干150 m影响较小。 Derive the differential equation of structural response under underwater explosion and its solution. According to the criteria of ductile plasticity of pressure shell, the failure radius under different conditions are calculated respectively, so as to study the factors affecting the failure radius. The calculation results show that under the same equivalent conditions, the explosion radius increases (or decreases) significantly at two simultaneous (or delayed) explosions; the damage radius increases approximately linearly with the increase of TNT equivalent; the azimuth of the explosive core affects more than 60 ° The submarine depth of 150 m in the smaller impact.