Study on energy output characteristics calculation method of two charges' shock wave from underwater explosion

Multi-charges exploded synchronously are very useful to improve explosion power. But, there is few of information concerning the peak pressure calculation of two charges' shock wave in present research. The calculation method based on distribution of emitted energy proposed in this paper, considered that under the influence of first charge's emitted energy, the second charge's propagation is changed. Then the correctness of the method has been proved through a series of experiments. Finally, the second charge's peak pressure and its change in entire plane are proposed. This method provides reference information for underwater explosion implement of multi-charges.