热塑性复合材料的电弧附着特征
收稿日期: 2022-05-07
修回日期: 2022-07-07
录用日期: 2022-07-13
网络出版日期: 2022-09-16
基金资助
中国商飞科技周(COMAC-SFGS-2021-3578)
Arc Attachment Characteristics of Carbon Fiber Reinforced Thermoplastic Materials
Received date: 2022-05-07
Revised date: 2022-07-07
Accepted date: 2022-07-13
Online published: 2022-09-16
碳纤维增强热塑性复合材料(CFRTP)作为一种潜力巨大的结构材料逐步在航空器上获得应用,然而该种材料的雷电电弧附着特征还尚不清楚.因此,通过模拟雷击的试验方法,研究了CFRTP的电弧附着特性,同时,开展了基于有限元方法的CFRTP对空间电场的改变效应分析,并与金属材料进行了对比.研究得到,航空器结构中,在同时包含CFRTP和金属材料情况下,CFRTP是雷电电弧的可能附着点,但电弧附着概率较金属材料低22.5%.雷电电弧附着过程中CFRTP表面出现了单个上行先导、多个上行先导的情况而产生对应的单个或多个电弧附着点情况,存在雷电电弧同时附着于金属和CFRTP的现象.仿真计算得到的空间电场分布结果与试验结果相符.研究为CFRTP的雷击特性和损伤响应提供基础.
关键词： 碳纤维增强热塑性复合材料; 雷击; 电弧; 附着特性
谢敏骐, 肖慈恩, 卞嘉鹏, 刘亚坤, 范寅, 陈秀华, 刘力博 . 热塑性复合材料的电弧附着特征[J]. 上海交通大学学报, 2023 , 57(9) : 1214 -1220 . DOI: 10.16183/j.cnki.jsjtu.2022.146
As a promising structural material, carbon fiber reinforced thermoplastic (CFRTP) has been gradually applied on aircrafts. The lightning arc adhesion characteristics of CFRTP, however, are still unclear. Therefore, the arc adhesion characteristics of CFRTP were studied by simulating the lightning test method. Based on the finite element method, the effect of CFRTP on spatial electric field was analyzed and compared with that of metal materials. It is found that for the structure containing both CFRTP and metal materials, CFRTP is possible to be attached by the lightning discharging channel, but the probability is lower than that of the metal material by 22.5%. In the process of lightning arc adhesion, single upward leader and multiple upward leaders appear on the surface of CFRTP, resulting in the corresponding single or multiple arc attachment points. Simultaneous adhesion of lightning arc on both CFRTP and metal material also occurs. The spatial electric distribution obtained by simulation is consistent with the experimental results. This paper can provide the basis for the lightning characteristics and damage response of CFRTP.
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