复合材料客机蒙皮受雷击损伤影响因素探究
Study on Influence Factors of Lightning Damage on Skin of Composites Passenger Aircraft
尚永锋 1冯天杰 1付为刚 1唐弋棣2
作者信息
- 1. 中国民用航空飞行学院 航空工程学院,四川 广汉 618307
- 2. 美国L.A.Turbine公司 工程部,美国 瓦伦西亚 91355
- 折叠
摘要
采用ANSYS仿真软件,模拟客机蒙皮复合材料层合板受到雷击电流冲击后各层的温度分布,进而探究损伤情况,并将模拟结果与实际的冲击试验进行对比验证.结果发现:增加材料的相变潜热可以减少雷击损伤;飞机复合材料蒙皮的密度越大,蒙皮越耐烧蚀;蒙皮材料的比热容值越高,蒙皮越耐烧蚀;而蒙皮导电率越小,烧蚀越严重,加大蒙皮厚度方向的导电率可以减弱烧蚀程度.模拟结果可为飞机蒙皮材料的研制与飞机雷击防护提供借鉴.
Abstract
ANSYS simulation software was used to simulate the temperature distribution of each layer after the impact of lightning current on the skin composite laminates of passenger aircraft,and then the damage situation was explored,the simulation results were compared with the actual impact test.The results show that increasing the latent heat of phase change can reduce the damage caused by lightning strike.The higher the density of the skin,the more resistant the skin to ablation.The higher the specific heat capacity,the more resistant the skin to ablation.The lower the skin conductivity,the more severe the ablation,increasing the conductivity in the direction of skin thickness can reduce the ablation degree.The simulation results can be used as a reference for the development of aircraft skin material and the protection of aircraft lightning strike.
关键词
复合材料/有限元分析/热冲击烧蚀/电热耦合Key words
composite/finite element analysis/thermal shock ablation/electrothermal coupling引用本文复制引用
基金项目
中国民用航空局民航科技项目(F2016KF06)
出版年
2024
NETL
NSTL
万方数据