高速冲击加载下碳纤维复合材料层合结构抗侵彻特性及响应机理  

Anti-penetration characteristics and response mechanism of carbon fiber reinforced plastic laminated structures under high-impact loading

作　　者：蔡宣明[1] 潘成龙 郭安肖 张迅 高玉波[1] 范志强[1] CAI Xuanming;PAN Chenglong;GUO Anxiao;ZHANG Xun;GAO Yubo;FAN Zhiqiang(School of Aerospace Engineering,North University of China,Taiyuan 030051,China;China National Heavy Duty Truck Group Co.,Ltd.,Jinan 250000,China)

机构地区：[1]中北大学航空宇航学院,太原030051 [2]中国重型汽车集团有限公司,济南250000

出　　处：《振动与冲击》2024年第12期88-96,165,共10页Journal of Vibration and Shock

基　　金：省部共建动态测试技术国家重点实验室基金(2022-SYSJJ-03)。

摘　　要：碳纤维复合材料层合结构在高冲击服役环境中常遭受外来物体冲击作用,使之出现一些不可预测的各种损伤形式,甚至会出现不可控的损伤模式。为确保这些结构的安全性和可靠性,对碳纤维复合材料层合结构抗冲击响应及防护机理展开了研究。以碳纤维复合材料层合结构作为研究对象,基于一级轻气炮构建高速冲击加载试验装置,探明了碳纤维复合材料层合结构能量吸收特性与冲击能量之间的联系规律,结合弹道极限方程,确定了其弹道极限,并明确了不同冲击速度作用下的损伤模式。同时引入内聚力单元进行数值模拟仿真研究,探明了碳纤维复合材料层合结构层与层之间内聚力单元的损伤模式,揭示了其在高速冲击加载环境下的损伤机制。研究结果为反向设计适用于高速冲击加载环境复合材料层合结构提供理论依据。Carbon fiber reinforced plastic laminated structures are often subjected to the impact of foreign objects in high-impact service environments,which results in a number of unpredictable forms of damage and even uncontrollable damage patterns.To ensure the safety and reliability of these structures,the impact response and protection mechanism of carbon fiber composite laminated structures have been studied.Taking the carbon fiber composite laminated structure as the research object,a high-speed impact loading test device was constructed based on a first-stage light air gun,the linkage law between the energy absorption characteristics of the carbon fiber composite laminated structure and the impact energy was explored,the ballistic limit was determined by combining with the ballistic limit equations,and the damage modes under the effect of different impact velocities were clarified.At the same time,the cohesion unit was introduced to carry out numerical simulation research,which proves the damage mode of the cohesion unit between layers of the carbon fiber composite laminated structure,and reveals its damage mechanism under the high-speed impact loading environment.The results provide theoretical basis for the reverse design of composite laminated structures suitable for high-speed impact loading environment.

关 键 词：冲击 复合材料层合结构 能量吸收 抗侵彻性能 

分 类 号：O34[理学—固体力学]