基于拓扑优化设计的宽频吸波复合材料  

Broadband absorbent materials based on topology optimization design

作　　者：莫漫漫 马武伟[1] 庞永强 陈润华 张笑梅[1] 柳兆堂 李想[1] 郭万涛[1] Mo Man-Man;Ma Wu-Wei;Pang Yong-Qiang;Chen Run-Hua;Zhang Xiao-Mei;Liu Zhao-Tang;Li Xiang;Guo Wan-Tao(Luoyang Ship Material Research Institute,Luoyang 471023,China;Jiangsu Saibo Space Science and Technology Co.,Ltd,Nanjing 210000,China)

机构地区：[1]中国船舶重工集团公司第七二五研究所,洛阳471023 [2]江苏赛博空间科学技术有限公司,南京210000

出　　处：《物理学报》2018年第21期334-343,共10页Acta Physica Sinica

摘　　要：本文基于拓扑优化方法设计并制备了一种宽频吸波复合材料,该吸波复合材料由高强玻璃纤维透波板、电阻损耗型超材料、聚氨酯泡沫和碳纤维反射板组成.仿真及测试结果表明,该吸波复合材料在2—18 GHz频段内的平板反射率均小于-12 dB.并且由于采用高强玻璃纤维及碳纤维复合材料作为面板层,聚氨酯泡沫作为芯材,因此该吸波复合材料不仅在较宽频带内对电磁波具有高的吸收率,同时还具有质量轻、耐高温、耐低温、耐湿热、抗腐蚀等特点,便于实现吸波与力学性能及耐环境性能的兼容,具有一定的工程应用价值.In this paper, we present a kind of broadband absorbent material. The broadband absorbent material is designed based on topology optimization and tested. The optimizing of metamaterials with a genetic algorithm has become one of the most effective methods of designing metamaterials in recent years. An integral system with interactive simulation of MATLAB and CST Microwave Studio is developed, and the main program of genetic algorithm is written in MATLAB; with simulation and computation in CST the metamaterial is optimized by a genetic algorithm with power of global optimization. Vacuum assistant resin infusion process is a new cost-effective and high-performance process. The proposed radar absorbent material possesses a sandwich structure, which consists of transparent composite skin panel,resistive metasurface, polyurethane foam and reflective composite skin panel. The transparent composite skin panel is low-dielectric-constant glass fiber reinforced composite, which has excellent physical properties and weather resistant property. The core material is composed of low density polyurethane foam and metamaterials, which can well meet the requirements for weight reduction and the invisibility. The reflective composite skin panel is a low-resistance carbon fiber reinforced composite, which prevents the electromagnetic waves from transmitting and also provides electrical boundary conditions for metamaterial. Simulation and test results indicate that the reflectivity of the radar absorbent material is less than -12 dB in a range of 2–18 GHz. Because of the symmetrical structure design of the resistance film, the radar absorbent material is polarization-independent. We preliminarily produce a batch of radar absorbent materials and test their various performances. Such a radar absorbent material has a strong absorption and other properties such as light quality, high temperature resistance, low temperature resistance, humidity resistance and corrosion resistance.The radar absorbent material which has been widely used

关 键 词：拓扑优化 电阻损耗型超材料 吸波性能 力学性能 耐环境性能 

分 类 号：TB33[一般工业技术—材料科学与工程]