基于CONWEP法空爆载荷下船体结构动态响应研究

Research on the Dynamic Response of Hull Structure under Air Explosion Load Based on CONWEP Method

针对油气泄漏引发月池区域和钻台结构处出现空中爆炸从而造成爆炸区域结构损伤的问题,以某型船为研究对象,运用CONWEP算法对月池和钻台结构动态响应进行数值仿真研究,然后分析爆炸冲击波对月池结构的损伤效果,得到不同爆炸位置下爆炸载荷能量变化,并将船舶结构损伤进行对比分析,得到了月池与钻台结构能量变化、损伤变形的特点与规律。结果表明:爆炸中心越接近月池结构中心,爆炸冲击波产生的炸药能作用在结构上的能量越多,月池结构更为危险。

Aiming at the problem of air explosion in the moon pool area and drill floor structure caused by oil and gas leakagewhich causes structural damage in the explosion area,a certain type of ship is taken as the research object,and the CONWEP algorithm is used to conduct numerical simulation research on the dynamic response of the moon pool area and the drill floor structure. Then,the damage effect of the blast shock wave on the moonpool structure is analyzed,and the energy change of the explosion load under different explosion positions is obtained. The structural damage of the ship is compared and analyzed,and the characteristics and laws of the structure energy change and damage deformation of the moonpool and the drill floor are obtained. The results show that the closer the explosion center is to the center of the moonpool structure,the more energy the explosive generated by the explosion shock wave can act on the structure,and the more dangerous the moonpool structure is.