某球形雷体结构的毁伤特性数值研究

Numerical Study on Damage Characteristics of Spherical Torpedo Structure

为合理设计反水雷武器的尺寸及重量、提高作战效率,对某球形雷体结构的毁伤特性数值进行研究。运用LS-DYNA软件开展水下静爆仿真,采用3维模型求解;分析裸药柱与某球形雷的作用距离、裸药柱装药量对雷体壳体毁伤的影响特性。结果表明:当裸药柱外端面与雷体壳体外缘的距离从210 mm增加到400 mm时,壳体变形量从3.9%降低到2.2%;裸药柱装药量从0.5 kg增加至2.5 kg,壳体变形量从0.58%降到3.4%;增大裸药柱装药量更能使雷体壳体结构加大塑性变形;确定造成雷体壳体毁伤的临界装药量为3 kg,临界距离为20 mm。

In order to reasonably design the size and weight of the torpedo countermeasure weapon and improve the operational efficiency,the numerical value of the damage characteristics of a spherical torpedo structure was studied.The LS-DYNA software was used to carry out the simulation of underwater static explosion,and the three-dimensional model was used to solve the model.The operating distance between the bare grain and a spherical torpedo,and the influence of the bare grain charge on the damage characteristics of the torpedo shell were analyzed.The results show that when the distance between the outer surface of the bare grain and the outer edge of the torpedo shell increases from 210 mm to 400 mm,the shell deformation decreases from 3.9%to 2.2%,and when the charge of the bare grain increases from 0.5 kg to 2.5 kg,the shell deformation decreases from 0.58%to 3.4%;The plastic deformation of the shell structure of the torpedo can be increased by increasing the charge amount of the bare charge column;the critical charge amount causing damage to the shell of the torpedo is detertorpedod to be 3 kg,and the critical distance is 20 mm.