箱形梁结构船体水下非接触爆炸冲击环境分析

Impulse environment analysis on box girder hull subjected to non-contact underwater explosion

为研究箱形梁结构船体在水下非接触爆炸作用下的冲击环境,在船体中部范围内主要受力部位设置箱形梁,并与考虑箱形梁产生的质量变化而建立的等重船模进行对比,来描述箱形梁结构对冲击环境的影响.基于Abaqus中的声固耦合算法求解2种形式船体的冲击响应,以冲击谱为工具描述船体结构的冲击环境,并给出舱内甲板层的冲击环境分布.分析归纳箱形梁的作用机理,为相关舰船设备的舾装与船体优化设计提供参考.

To study the impulse environment of hull with box girder when subjected to underwater non contact explosion, the box girders are installed inside the main loading region of the mid ship domain and compared with weight equivalent hull to describe the effect of the structure on environment. The acoustic structural coupling method adopted in Abaqus is introduced in analyzing impulse response on the two ship forms and the shock spectrum method is used to describe the impulse environment of the two hulls. Based on that, the ultimate shock property distribution of the two hulls are revealed and then the action mechanics of the box gird structure are discussed. The results can provide reference for the following ship facility outfit and hull optimizing design.