异形蜂窝吸波材料的设计与研制  

DESIGN AND DEVELOPMENT OF IRREGULAR HEXAGONAL HONEYCOMB ABSORBING MATERIALS

作　　者：郭雪松 陈乐[1] 孙惠敏[1] 顾兆栴 夏晨硕 GUO Xue-song;CHEN Le;SUN Hui-min;GU Zhao-zhan(School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China;Department of Foundation, Navy Petty Officer Academy, Bengbu 233000, China)

机构地区：[1]南京大学电子科学与技术学院,南京210093 [2]海军士官学校基础部,蚌埠233000

出　　处：《玻璃钢／复合材料》2018年第12期67-71,共5页Fiber Reinforced Plastics/Composites

基　　金：江苏省自然科学基金项目(BK20140606)

摘　　要：相较于普通正六边形蜂窝,异形蜂窝在力学性能上具有优势,且具有更明显的各向异性,但其几何结构复杂,至今还没有被准确地表征。基于等效媒质理论,采用仿真软件建模的方式,对异形蜂窝的电磁参数进行仿真,研究其等效电磁参数,并对2 GHz～18 GHz的吸波性能进行研究,计算数据与实验数据结果吻合,并以此为依据,优化设计了15 mm厚蜂窝,在增重为41. 25%,i值为0. 68时,反射率小于-10 d B的带宽达到12 GHz,且4 GHz、12 GHz的峰值分别达到-30 d B、-22 d B,可为蜂窝材料的设计提供参考,具有一定的工程实用价值。Compared to analogous regular hexagonal honeycombs with the same relative density,the heteromorphic honeycomb has advantages in mechanical properties and has more obvious anisotropy,but its high geometric complexity would bring troubles to the design of radar absorbing materials.Based on the equivalent medium theory,simulation software was used to simulate the electromagnetic parameters of the heterogeneous honeycomb to obtain the equivalent electromagnetic parameters.The complex permittivity and microwave-absorbing properties were investigated in the frequency range of2GHz^18GHz.The calculated data were in good agreement with the experimental results.Based on the model,honeycombs of15mm thickness with different draw ratios were optimized in the case of the same absorber increment.The band width can reach nearly12GHz as the microwave-absorption reflectivity was below than-10dB with thickness of15mm.The minimum reflectivity of-30dB,-22dB were obtained at4GHz and12GHz,respectively,for the i=0.68honeycomb with41.25wt%absorbers.The calculated results have certain practical value and wide applicability for similar honeycomb structure design and absorbing performance optimization.

关 键 词：蜂窝吸波结构 孔径比 等效电磁参数 微波吸收性能 

分 类 号：TB332[一般工业技术—材料科学与工程]