水中冲击波与弹性薄板耦合作用的研究

对水中冲击波与弹性薄板的流固耦合作用进行了研究,建立了实验装置。利用全息干涉法定量测量了水中动态流场,并测出受水中冲击波作用的弹性薄板在不同时刻的变形,得出相应的全息干涉条纹图。同时利用有限元法对水中冲击波与弹性薄板的流固耦合问题进行了数值计算。研究结果表明,用实验方法能够较好地模拟水中冲击波与弹性结构的耦合作用,用有限元法计算水中冲击波传播问题是可行的。

Study on the interaction of underwater shock wave and elastic thin plate

The fluid-solid coupling interaction of underwater shock wave and elastic thin plate is investigated in this paper. Experiment equipment for the problem is set up. Dynamic holographic interferometry is used to measure underwater dynamic pressure field quantitatively. The distribution of distortion of elastic thin plate against underwater shock wave at different time is measured. The figure of holographic interferometry wave is achieved. At the same time the fluid-solid coupling problem of underwater shock wave and elastic thin plate is calculated numerically using finite element method. The simulation results show good agreement with experimental results. It also shows that the finite element method is efficient to calculate the transmission problem of underwater wave.