泡沫芯层夹层结构水下爆炸冲击特性研究

Dynamic response of a submarine foam sandwich structure subjected to underwater explosion

研究分析了用于提高水下结构抗冲击性能的泡沫芯层夹层结构受水下爆炸作用时的冲击响应及其流固耦合问题。着重讨论了芯层相对密度不同时,夹层结构的前面板壁压、夹层结构入射冲量、前后面板的速度和加速度、后面板支撑反力等参量的变化规律,并讨论了前面板材料对夹层结构冲击响应的影响规律。

Dynamic response of a submarine foam samdwich structure subjected to underwater explosion and its problem of fluid-structure interaction were analyzed.The varying law of the wall pressure of the front face plate of the sandwich structure,the incident impulse of the sandwich structure,the velocity and the acceleration of the front face and back plates as well as the sustaining force of the back plate versus the different relative mass densities of the foam layer were discussed,the influence of the material of the front face plate on the dynamic response of the sandwich structure was discussed.