弯曲复合材料层合板雷击损伤影响分析  

Analysis of Lightning Damage in Curved Composite Laminates

作　　者：单泽众 杨霄 马凯[1] 任鹏 SHAN Ze-zhong;YANG Xiao;MA Kai;REN Peng(Aviation Engineering Institute,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]中国民航大学航空工程学院,天津300300

出　　处：《科学技术与工程》2023年第30期13179-13186,共8页Science Technology and Engineering

基　　金：中央高校基本科研业务费项目中国民航大学专项(3122022064)。

摘　　要：复合材料已在民航客机上得到广泛的应用,但由于导电性、导热性较低等原因,致使在雷击附着后出现较大范围的烧蚀损伤,威胁民航客机的运行安全。为了能够更安全地让复合材料应用于民航客机上,研究民机常用弯曲复合材料雷击防护特性,建立弯曲复合材料雷击损伤电热耦合有限元模型,并研究不同因素对弯曲层合板雷击损伤性能影响。结果表明,弯曲层合板相比于未弯曲的层合板,由于热导率的影响,致使其在50 kA峰值雷击电流作用下,烧蚀面积增加了1.5倍,深度扩大至第六层,最小层的损伤面积增加了10.67倍;此外,雷击电流峰值、弯曲角度对雷击损伤结果影响较大,而长宽比、纤维铺层方向、厚度由于弯曲层合板电势、热导率的影响致使其影响程度较小,此与未弯曲层合板的雷击影响因素影响特点具有较大的差异性。Composite materials have been widely used in civil aviation aircraft,but due to low electrical conductivity and thermal conductivity,a wide range of ablation damage occurs after lightning strikes,threatening the operation safety of civil aviation aircraft.In order to make composite materials more safely used in civil aviation aircraft,the lightning strike protection characteristics of commonly used curved composite materials in civil aviation aircraft are studied.The electrothermal coupled finite element analysis model of lightning strike damage of curved composite materials was established,and the influence of different factors on the lightning strike damage performance of curved laminates was studied.It is found that the ablation damage area of the curved composite laminate is increased by 1.51 times under the action of the peak lightning current of 50 kA due to the influence of thermal conductivity,and the depth expands to the sixth layer,and the damage area of the smallest layer increases by 10.67 times.In addition,the peak value of the lightning strike current and the curved angle have a greater impact on the lightning strike damage results,while the aspect ratio,the direction of fiber,and the thickness are less affected by the potential and thermal conductivity of the curved laminate.It is quite different from the influence characteristics of lightning strike factors of uncurved laminates.

关 键 词：复合材料层合板 弯曲 雷击 电热耦合有限元分析模型 影响因素 

分 类 号：V258.3[一般工业技术—材料科学与工程] TB332[航空宇航科学与技术—航空宇航制造工程]