摘要
针对引入蒙皮材料导致吸波蜂窝26.5~40 GHz频段吸波性能退化的问题,对蒙皮的结构进行了改进设计,研究了A型蒙皮结构对多层蜂窝吸波性能的影响机制及规律,并得到了最优的蒙皮结构参数。研究结果表明,设计的A型结构,可有效改善蒙皮的高频段透波性能。随着A型蒙皮中透波蜂窝厚度的增加,复合吸波蜂窝在2~18 GHz频段内的吸波性能保持在相当的水平,在26.5~40 GHz波段吸波性能先升高后降低,透波蜂窝的最优厚度为2 mm。基于5种不同电磁特性的吸波蜂窝片材料,设计制备的具有0.3 mm石英布/2 mm透波蜂窝/0.3 mm石英布蒙皮结构的复合蜂窝在2~18 GHz及26.5~40 GHz的超宽频带内具备优异的吸波性能,与仿真优化结果保持一致。
In order to solve the problem of wave absorption performance degradation in the 26.5-40 GHz frequency band caused by the introduction of skin material,the design of the skin structure was improved,the influence mechanism and law of A-type skin structure on the wave absorption performance of multi-layer honeycomb were studied,and the optimal structure parameters of A-type skin were obtained.The research results show that the A-type skin can improve the high frequency wave-transmitting property effectively.With the thickness of the honeycomb increasing,the reflectivity in the 2-18 GHz frequency band remains at the same level and the reflectivity in the 26.5-40 GHz frequency band increases at first and then decreases.The optimal thickness of the honeycomb is 2 mm.Based on five kinds of absorbing honeycomb sheets,the composite honeycomb was designed and prepared with the structure of quartz cloth(0.3 mm)/wave-transmitting honeycomb(2 mm)/quartz cloth(0.3 mm).The optimized absorbing honeycomb has excellent absorbing property in the wide frequency band of 2-18 GHz and 26.5-40 GHz,which is corresponding to the simulation result.
作者
邢孟达
马向雨
宫元勋
吕通
李策
赵宏杰
XING Mengda;MA Xiangyu;GONG Yuanxun;LV Tong;LI Ce;ZHAO Hongjie(Aerospace Institute of Advanced Material&Processing Technology,Beijing 100074,China)
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
2022年第3期1180-1185,共6页
Acta Materiae Compositae Sinica
关键词
吸波蜂窝
A型蒙皮
宽频
反射率
阻抗匹配
absorbing honeycomb
A-type skin
broadband
reflectivity
impedance matching
