CAJ | 학술논문

远场水下爆炸载荷作用下结构动态响应的数值模拟方法的研究一直是国内外专家关注的热点。针对远场爆炸中冲击波传播的消散过程，将爆炸冲击波载荷直接加载于结构附近的水域面，基于 DAA和Taylor板理论，提出简化的改进数值计算方法。采用有限元软件模拟水下爆炸的冲击波传播，通过与经验公式对比，表明只有当水域网格较小时，才能比较真实的模拟冲击波传播过程。最后通过文献中的实验验证了改进方法的准确性，该方法可有效的分析远场水下爆炸下结构的非线性动力高频响应。
원장수하폭작재하작용하결구동태향응적수치모의방법적연구일직시국내외전가관주적열점。침대원장폭작중충격파전파적소산과정，장폭작충격파재하직접가재우결구부근적수역면，기우 DAA화Taylor판이론，제출간화적개진수치계산방법。채용유한원연건모의수하폭작적충격파전파，통과여경험공식대비，표명지유당수역망격교소시，재능비교진실적모의충격파전파과정。최후통과문헌중적실험험증료개진방법적준학성，해방법가유효적분석원장수하폭작하결구적비선성동력고빈향응。
The numerical simulation method of structure dynamic response subjected to far-field underwater ex-plosions was always paid to great attention by the researchers. Due to the shock wave dissipating characteristic,the explosion shock wave was loaded on the water field near the target structure. A simplified and improved method was presented based on the DAA and Taylor plate method. Compared the results of the shock wave propagating character-istic by finite element software with the empirical formula,the process was simulated accurately only on condition of small size element application in the water field. Finally the presented method was verified by the experiment in the reference. The present method solved the nonlinear dynamic high-frequency response problem of structure under far-field underwater explosions.