当前位置: X-MOL 学术Int. J. Damage Mech. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Numerical modeling and analysis of the ballistic impact response of ceramic/composite targets and the influence of cohesive material parameters
International Journal of Damage Mechanics ( IF 4.2 ) Pub Date : 2021-02-11 , DOI: 10.1177/1056789521992107
Ibrahim Goda 1 , Jérémie Girardot 1
Affiliation  

Hybrid ceramic/composite targets are acknowledged to provide effective impact protection against armor piercing projectiles, which is why the research on this topic is continuously developing further. In this work, a nonlinear dynamic finite element (FE) simulation method is developed to systematically explore the ballistic perforation behaviors of hybrid ceramic/woven-fabric reinforced polymer (WFRP) composite when impacted by a non-deformable projectile. The hybrid system is composed by an alumina ceramic plate forming the front surface and glass or carbon WFRP composite back-up plate. The simulations are carried out using ABAQUS/Explicit FE code, wherein three different constitutive material models are formulated and implemented. The Johnson–Holmquist and composite damage models are used for alumina and composite material behaviors, respectively. The brittle fracture and fragmentation of the ceramic plate and the failure criteria based on fracture of fibers or matrices of composite materials during perforation are considered. Besides, interlaminar delamination between composite plies as well as ceramic/composite interfacial decohesion are modeled using a cohesive surface method, and the behaviors of interlayer degradation and failure are described using a traction-separation law. The accuracy of the developed model is validated with available experimental and analytical results. What’s more, the perforation process against the projectile and the ballistic mechanism of each layer in the composite backplate and in the ceramic as well are profoundly explored. Meanwhile, the numerical simulations are used to evaluate the changes of energy of the projectile and ceramic/composite panels. The influence of key parameters, such as interface cohesive properties and friction, on the ballistic performance in terms of energy absorption capability is additionally addressed. For the preliminary and early design phase, the present dynamic model could provide an efficient approach for numerical predictions of ballistic impact responses of the hybrid ceramic/FRP composites.



中文翻译:

陶瓷/复合靶弹道冲击响应及内聚材料参数影响的数值模拟与分析

陶瓷/复合材料混合靶被认为可以有效地抵抗装甲穿透弹丸的撞击,这就是为什么这个主题的研究正在不断发展的原因。在这项工作中,开发了一种非线性动态有限元(FE)仿真方法,以系统地研究杂化陶瓷/机织织物增强聚合物(WFRP)复合材料在受到不可变形弹丸撞击时的弹道穿孔行为。混合系统由形成前表面的氧化铝陶瓷板和玻璃或碳WFRP复合材料支撑板组成。使用ABAQUS / Explicit FE代码进行仿真,其中制定并实现了三种不同的本构材料模型。Johnson-Holmquist模型和复合材料损伤模型用于氧化铝和复合材料的行为,分别。考虑了陶瓷板的脆性断裂和碎裂以及基于穿孔过程中复合材料的纤维或基体断裂的破坏准则。此外,使用粘结表面方法对复合层之间的层间分层以及陶瓷/复合材料界面脱粘进行了建模,并使用牵引分离定律描述了层间降解和破坏的行为。已开发的模型的准确性已通过可用的实验和分析结果进行了验证。此外,还对复合背板和陶瓷各层的射弹和弹道机理进行了深入研究。同时,数值模拟用于评估弹丸和陶瓷/复合板能量的变化。此外,还讨论了关键参数(如界面的内聚性和摩擦力)在能量吸收能力方面对弹道性能的影响。对于初步设计和早期设计阶段,本动力学模型可以为混合陶瓷/ FRP复合材料的弹道冲击响应的数值预测提供有效的方法。

更新日期:2021-02-12
down
wechat
bug