The Study Of Underwater Blasting Warhead Damage Assessment Based On Parallel Computing

The warhead is the final damaging unit for every type of munitions and missiles, etc. It is an important component of these systems. The blasting warhead is the main type of current conventional weapons. To destroy the target, it can generate explosive products (gases of high temperature and pressure), shock wave, bubble and debris from explosion to realize. The underwater blasting warhead takes a more complicated damage mechanism. Besides of mentioned above, it consists of reflections from the ocean surface and the sea floor, bubble jet, etc. As the computational techniques and methods develop, and the underwater explosion mechanism is studied much deeper, the numerical simulation has been a significant tool to investigate the underwater explosion presently.In this study, we chose a certain ship to be the target, from far to near, to study the damage capacity of the blasting warhead numerically based on high performance cluster system using128cores and the computational software ABAQUS. Given the computational results, the simulation of each case was assessed and the final assessment was concluded based on various blasting warhead damage assessment approaches.First, we summarized the research work and the present development abroad and home on the underwater explosion. We also stated the blasting warhead damage mechanism and simulation technique. The methods and impact factors considered in this study were demonstrated.Second, the computational models and means during this investigation were introduced briefly. Ten preset numerical conditions were computed in parallel process. In comparison with experimental data, we validated that the computational method is accurate enough to deal with blasting warhead damage capacity in engineering cases. Thus, the results of other simulations can be credible in terms of the same algorithms used in our study. Then we summarized the data from other numerical cases and proposed some regular conclusions.In sum, we considered the near and far field, global and local effects. Four assessment approaches were chosen to assess each numerical result comprehensively, and the assessment results were given. The blasting warhead damage capacity was evaluated finally based on each assessment result.