流固耦合条件下的薄壳振动产生传播机理与状态识别具有重要的科研价值与较好的工程应用前景。针对上述问题，本项目拟开展以下创新性研究工作：建立考虑剪切应力输运与移动粒子冲击的薄壳流固耦合动力学模型，研究薄壳流体冲击壁面效应与声场辐射特性；基于弗留盖薄壳应力理论，建立多点受迫条件下的薄壳振动模型，提出面向轴向变量的位移响应求解方法；构建面向薄壳位移响应的特征向量，揭示薄壳位移特征向量与振动波传播之间的本质关系，提出薄壳在流固耦合冲击条件下的状态识别方法。本项目拟取得成果可为复杂机械约束条件下的薄壳流固状态识别提供解决方案，也可为石油化工、管道运输、航空航天、船舶舰艇等领域所涉及的组合结构健康监控、薄管构件性能优化设计、结构缺陷精确定位等技术与系统的研发提供理论依据与技术参考。

The shock vibration mechanism and recognition methods of thin shells under liquid-solid coupling conditions are with important scientific values and wide engineering prospects. To address the above issues, the project is to accomplish the following innovative research works. A liquid shock dynamic model of thin shell is set up based on the shear stress transport turbulence model and moving particle semi-implicit method, and the liquid shock wall effects and sound radiation characteristics are researched. According to the Flügge shell stress theory, a multi-end forced vibration model for thin shell is built up, and the displacement response solution method for the axial variable is proposed. The characteristic vectors for shell displacement response are constructed, and the essential relations between the vectors and vibration waves are revealed. Based on the above works, the calculation instances and recognition methods for thin shell liquid shock are developed, which not only can provide solutions for the liquid-solid state recognition of thin shell with complex mechanical constraints, but can offer theoretical references to the matters of composite structure health monitoring, thin shell component characteristic optimization design and structural defect precise detection in the areas of petro-chemistry, pipeline transportation, aeronautics/astronautics and naval engineering.