The tidal current turbine is the most efficient way to extract energy from the sea. This system can be prone to critical loads such as impact accidental in the installation and maintenance phase. Indeed, several complex modes of damage susceptible to harming the stability of the structure are studied to conceive hybrid composite nozzles with better resistance to damage. For this reason, two scenarios of low‐velocity impact of a hybrid composite nozzle (glass/carbon) were investigated. In both cases, the impact was realized in the region of the trailing edge of the nozzle, and the results obtained were compared between three different laminated. On the other hand, damage modeling was formulated using the finite element method based on the Hashin criteria. Energy conservation of the nozzle was verified to validate the numerical model. Also, the effects of the impact velocity and the panel's flexibility on the initiation and propagation of damage have been studied. Depending on the results, the stacking sequence significantly influences the formation of damage. However, the results show that the hybrid nozzle with CGG (carbon/glass/glass) stacking has a higher impact resistance compared to other laminates.

中文翻译：

---

冲击载荷下海洋应用混合复合材料的能量吸收特性：潮流涡轮机的情况

潮流涡轮机是从海洋中提取能量的最有效方法。在安装和维护阶段，该系统可能会承受重大负荷，例如意外撞击。确实，已经研究了几种易于损坏结构稳定性的复杂破坏方式，以构想具有更好抵抗破坏能力的混合复合材料喷嘴。因此，研究了混合复合材料喷嘴（玻璃/碳）的低速冲击的两种情况。在这两种情况下，都在喷嘴的后缘区域实现了冲击，并且在三种不同的层压材料之间比较了获得的结果。另一方面，基于Hashin准则，使用有限元方法来建立损伤建模。验证了喷嘴的节能性以验证数值模型。还，研究了冲击速度和面板柔性对损伤的产生和传播的影响。根据结果​​，堆叠顺序会严重影响损坏的形成。但是，结果表明，与其他层压板相比，具有CGG（碳/玻璃/玻璃）堆叠的混合喷嘴具有更高的抗冲击性。