Research and Development: Applications

As far as literature researches has been made author predict this is the first full floating structure with pulsation an underwater explosion (UNDEX) FEM official presentation problem. The results of a study on the impact of an initial shock wave on a floating structure, followed by a subsequent bubble shock wave caused by UNDEX, are presented. The findings illustrate the immediate effects of an underwater explosion near a floating structure, including the resulting shock wave and structural deformation. The formation of the bubble shock wave from the explosion-generated gas and the consequent deformation of the floating structure is detailed. Additionally, the phenomena that occur following the re-expansion of explosion-generated gas after the bubble shock wave are examined. The analysis reveals that the time scale required to study the effects of the bubble shock wave is significantly longer—over 100 times—than that needed for the initial shock wave propagation. This disparity in time scales introduces a major computational challenge. This study, conducted using LS-DYNA, showcases the software’s comprehensive capability to tackle these issues.