CAJ | 학술논문

针对舰船水下近场爆炸，提出综合考虑冲击波载荷与射流载荷的分析方法。对水下近场爆炸气泡脉动过程进行数值模拟，建立射流冲击计算模型，进而简化射流载荷，在冲击波阶段流固耦合模拟结束后自动添加射流载荷，形成完整水下近场爆炸过程的计算流程。建立舷侧板架结构有限元模型，采用MSC．Dytran软件进行流固耦合数值模拟验证方法的可行性。该方法综合考虑冲击波与射流载荷对结构作用，能较真实模拟水下近场爆炸过程，具有一定工程意义及参考价值。
침대함선수하근장폭작，제출종합고필충격파재하여사류재하적분석방법。대수하근장폭작기포맥동과정진행수치모의，건립사류충격계산모형，진이간화사류재하，재충격파계단류고우합모의결속후자동첨가사류재하，형성완정수하근장폭작과정적계산류정。건립현측판가결구유한원모형，채용MSC．Dytran연건진행류고우합수치모의험증방법적가행성。해방법종합고필충격파여사류재하대결구작용，능교진실모의수하근장폭작과정，구유일정공정의의급삼고개치。
A method considering the combined action of shock wave and jet load was proposed for the simulation of underwater near-field explosion effect on ships.The bubble motion process of near-field underwater explosion was numerically simulated.A jet impact model was established,and then the jet load was simplified.The jet load was automatically added to the fluid-structure coupling simulation model after the shock wave phase to form a complete calculation process of underwater near-field explosion.Finally,the finite element model of a shell frame structure was established by using MSC.Dytran software.The numerical example validates the feasibility of the method.The proposed method considering the effect of shock wave load and jet load at the same time will give a more realistic simulation of the underwater near-field explosion process.