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Study of collision characteristics of water-filled double-layer structure
Marine Structures ( IF 3.9 ) Pub Date : 2021-04-14 , DOI: 10.1016/j.marstruc.2021.102977
Lin Zhang , Tao Zhang , Tianyun Li , Tuguang Liu

Water-filled double-layer structures are typical hull structures. However, the effect of the carried water has often been neglected in previous collision studies. The carried water couples with the hull structure and participates in the energy absorption process, which reduces the collision damage done to the hull structure. This paper focuses on the effects of compressible carried water on the collision characteristics of a hull structure. Therefore, collision experiments with a simplified double-layer structure (water tank) were performed, and the corresponding collision process was simulated with the finite-element method. The two kinds of pressure (a shock wave and pressure disturbance) generated in the carried water when the water tank collides with a striker were investigated. By comparing the dynamic characteristics of empty and completely filled water tanks, it can be observed that the pressure of the carried water can reduce the displacement of the outer plate and change its deformation shape. Furthermore, the effects of pressure on the collision force and displacement of the inner plate were investigated. Finally, the collision characteristics of a typical water-filled side structure are presented as an example.



中文翻译:

充水双层结构的碰撞特性研究

充满水的双层结构是典型的船体结构。但是,在先前的碰撞研究中,经常忽略了载水的影响。所携带的水与船体结构耦合并参与能量吸收过程,从而减少了对船体结构的碰撞破坏。本文重点研究可压缩携带水对船体结构碰撞特性的影响。因此,进行了具有简化双层结构(水箱)的碰撞实验,并使用有限元方法模拟了相应的碰撞过程。研究了水箱与撞针碰撞时在携带的水中产生的两种压力(冲击波和压力扰动)。通过比较空水箱和完全装满水的水箱的动力特性,可以发现载水压力可以减小外板的位移并改变其变形形状。此外,研究了压力对内板碰撞力和位移的影响。最后,以典型的充满水的侧面结构的碰撞特性为例。

更新日期:2021-04-15
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