为探讨防雷舱结构设计,采用有限元方法对同一防雷舱结构的典型模式和液舱前置模式进行数值仿真计算,通过对典型模式与实验结果的对比,验证了数值计算方法的有效性.着重分析了液舱前置对防雷舱结构动响应过程、失效模式及防护效能的影响,并分析了其形成机制.从结构破坏过程、载荷特性、吸能特性三个方面对比了两种模式的差异,探讨了两种模式防雷舱结构的防护机理,为舰船水下舷侧防护结构的工程设计提供了参考.%In order to probe into the design of multi-layered protective structure, the finite element method was used to simulate the typical mode and the pre-liquid cabin mode of the same multi-layered protective structure, and the validity of numerical simulation method was verified by comparison of the typical mode and experimental results.The influences of the pre-liquid cabin mode on the dynamic response process, the failure mode and the protective efficiency of the multi-layered protective structure were analyzed specifically, and its forming mechanism was analyzed.The differences between the two modes were compared from the following three aspects: the structure failure process, the load characteristics and the energy absorption characteristics.Finally, the protective mechanism of multi-layered protective structure is discussed, which provides a reference for the engineering design of underwater broadside protection structure of surface vessels.
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