Wall Effect of Underwater Explosion Load Based on Wave Motion Theories  

作　　者：肖巍 姚熊亮 郭君 

机构地区：[1]College of Shipbuilding Engineering, Harbin Engineering University

出　　处：《China Ocean Engineering》2014年第5期587-598,共12页中国海洋工程（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Grant Nos.51279038 and 51109042);the Natural Science Foundation of Heilongjiang Province of China(Grant No.E201124)

摘　　要：Owing to the existence of the flow field boundary, the shock wave load near the boundary is different from the freefield shock wave load. In the present paper, the hull plate load subjected to underwater shock wave is investigated based onwave motion theories; in addition, the experimental study of the hull plate load is carried out. According to the theoreticalanalysis of the hull plate pressure, we find that the hull plate pressure oscillates repeatedly and decays rapidly with timepassing, the maximum hull plate pressure is 2/（1＋n） times the maximum free field pressure, where n is the ratio ofimpedance, and the impulse is much smaller than the free field impulse. Compared with the experimental study, thetheoretical results agree well with the experimental data.Owing to the existence of the flow field boundary, the shock wave load near the boundary is different from the freefield shock wave load. In the present paper, the hull plate load subjected to underwater shock wave is investigated based onwave motion theories; in addition, the experimental study of the hull plate load is carried out. According to the theoreticalanalysis of the hull plate pressure, we find that the hull plate pressure oscillates repeatedly and decays rapidly with timepassing, the maximum hull plate pressure is 2/（1＋n） times the maximum free field pressure, where n is the ratio ofimpedance, and the impulse is much smaller than the free field impulse. Compared with the experimental study, thetheoretical results agree well with the experimental data.

关 键 词：underwater explosion wave motion theories wall effect IMPEDANCE EXPERIMENT 

分 类 号：O381[理学—流体力学] U661.4[理学—力学]