AlAhmed Yaqoub S, Bahroun Zied, Hassan Noha M
Industrial Engineering Department, College of Engineering, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates.
Heliyon. 2024 Feb 27;10(5):e27236. doi: 10.1016/j.heliyon.2024.e27236. eCollection 2024 Mar 15.
Researchers have extensively explored various approaches to enhance the blast resistance of structures, concentrating on optimizing structural designs and employing a wide range of materials. This research investigates the impact of incorporating water as a fluid within the core of tubular sandwich panels on blast mitigation effectiveness. The study systematically analyzes various panel configurations by altering key design parameters: the thickness of the face sheets, spacing between the core elements, and proportion of fluid within the core. These variables are scrutinized through metrics such as elastic strain energy, the amount of work applied externally, and the movement of the panel. Utilizing finite element analysis, 27 distinct numerical experiments were conducted to gather data. The findings demonstrate that panels with a water-filled core exhibit superior blast resistance compared to their non-fluid counterparts. Specifically, panels with completely filled cores showed the lowest levels of panel displacement and external work, whereas those with half-filled cores recorded the highest elastic strain energy. Furthermore, regression analysis revealed that plate thickness predominantly influences panel displacement and external work, whereas the fluid volume fraction within the core most significantly affects elastic strain energy. This study contributes to the understanding of fluid-structure interactions in blast-resistant design, offering valuable insights for optimizing structural defenses against blast impacts.
研究人员广泛探索了各种增强结构抗爆性的方法，重点在于优化结构设计和使用多种材料。本研究调查了在管状夹芯板芯部加入水作为流体对减轻爆炸影响效果的作用。该研究通过改变关键设计参数系统地分析了各种板配置：面板厚度、芯部元件间距以及芯部内流体的比例。通过诸如弹性应变能、外部施加的功的量以及板的位移等指标来仔细研究这些变量。利用有限元分析进行了27个不同的数值实验以收集数据。研究结果表明，与无流体的对应板相比，芯部充水的板具有更好的抗爆性。具体而言，芯部完全充满的板显示出最低的板位移和外部功水平，而芯部半充满的板记录到最高的弹性应变能。此外，回归分析表明，板厚度主要影响板位移和外部功，而芯部内的流体体积分数对弹性应变能影响最为显著。本研究有助于理解抗爆设计中的流固相互作用，为优化抗爆冲击的结构防御提供了有价值的见解。
