发射装置模拟试验承压结构——假海,在试验过程中需要在其内部充水,这种情况下的模态称为湿模态。文章通过充水管道的仿真结果同试验数据的对比,验证了利用Workbench声学拓展模块进行基于声固耦合算法的结构湿模态仿真的可行性;然后运用该方法对假海进行湿模态仿真,并将结果同干模态仿真结果进行对比分析,得到了充水对假海固有振动特性的影响,为相关充液结构的湿模态研究提供参考。 Launch device simulation test Pressure structure - fake sea, in the test process needs to be filled in its interior, the mode of this case is called the wet mode. The article verifies the feasibility of using the Workbench acoustic expansion module to simulate wet structural mode based on the acoustic-solid coupling algorithm through the comparison between the simulation results of the water-filled pipeline and the experimental data. Then, the method is used to simulate the wet- The results are compared with the results of dry modal simulation. The influence of water flooding on the inherent vibrational characteristics of the false sea is obtained, which provides a reference for the wet mode research of the relevant liquid-filled structures.