水下非接触爆炸下舰船球鼻艏结构抗爆抗冲击性能数值仿真

球鼻艏作为现代舰船的重要结构，具有降低流体阻力和装载声呐的作用，其结构强度直接关系到舰船的战斗力，而其抗爆抗冲击性能更是影响舰船生命力的重要因素。针对某舰球鼻艏结构，采用ANSYS软件建立有限元模型，并应用ABAQUS对其水下非接触爆炸载荷下的抗冲击性能进行数值仿真计算。计算结果表明，合理的结构设计及材料选择可使球鼻艏结构在不同水下非接触爆炸载荷下的塑性变形均处于安全范围内，并发现其主要薄弱环节位于导流罩与船体外板的连接区域，从而在设计中对薄弱环节进行适当加强。

Numerical Simulation of Anti-Impact Performance of Bulbous Bows on Ships Subjected to Underwater Non-Contact Explosion

The bulbous bow，a key structure of modern naval vessels，plays the role of reducing fluid resistance and accommodating shipboard sonars. Its structural strength directly relates to the vessel’s combat capability，and its anti-explosion performance guarantees the vessel’s survivability. In this paper，a finite element model of the bulbous bow is established based on ANSYS，and the numerical simulation of its anti-impact property is carried out with ABAQUS. The results show that with rational optimization design and material selection，the plastic deformation of bulbous bows subjected to different underwater non-contact explosion loads can be limited within a safe range. Particularly，the primary weak link is observed to locate at the connecting area of the fairing and hull plate，which can be strengthened correspondingly during the design process.