摘要
为探究不同吸波特性材料之间的组合规律,以在更宽频段范围内达到最佳雷达波吸收效果,选用两种不同吸波剂浸渍的纸蜂窝结构型吸波材料板(分别命名为FW10和FW20),以石英纤维板为外侧蒙皮,制备出一种具有较好雷达波吸收能力的复合板件,该板件可与常规壁板结合使用。采用时域有限差分法计算不同材料厚度组合下的材料雷达散射截面(RCS)值和反射率,并采用正交设计法对最优厚度组合进行进一步的探究,结果表明:复合结构的吸波效果与各层材料组合及其厚度分布有关,所得最优复合板件厚度组合方案从外向内依次为1 mm石英纤维板,15 mm FW10和15 mm FW20。最优方案复合板件在0~18 GHz频段范围内反射率低于-10 dB的吸收频段宽度为13.1 GHz,最大吸收峰可达-29.5 dB。最后进行实物测试,验证了仿真分析的有效性。
In order to explore the rules governing the combination of different absorbing materials and achieve the best radar wave absorption effect over a wider band,paper honeycomb structural absorbing materials impregnated with two different absorbing agents were selected,and are denoted FW10 and FW20.Quartz fiberboard was used as the outer skin to prepare a material with better radar wave absorption ability.The resulting composite plate can be combined with a conventional panel.The radar cross section(RCS) values and reflectivities of materials with different thickness combinations were calculated by the finite difference time domain method,and the optimal thickness combinations were further explored by the orthogonal design method.The results show that the absorbing effect of the composite structure is related to both the material combination and the thickness distribution of the layers.The optimal thickness combination scheme of the composite plate is 1 mm quartz fiberboard,15 mm FW10 and 15 mm FW20 from the outside to the inside.In the range of 0-18 GHz,the absorption band width of the composite plate with reflectivity below-10 dB is 13.1 GHz,and the maximum absorption peak is-29.5 dB.Finally,physical tests were conducted to verify the validity of the simulation analysis.
作者
孙鹏程
王良模
王陶
黄健
沙小伟
陈威
SUN PengCheng;WANG LiangMo;WANG Tao;HUANG Jian;SHA XiaoWei;CHEN Wei(College of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094;Suzhou Jiangnan Aerospace Mechanical and Electrical Industry Co., Ltd., Suzhou 215300, China)
出处
《北京化工大学学报（自然科学版）》
CAS
CSCD
北大核心
2019年第4期58-64,共7页
Journal of Beijing University of Chemical Technology(Natural Science Edition)
基金
国家重点研发计划(2017YFC0806405)
关键词
吸波材料
雷达散射截面(RCS)
反射率
时域有限差分法
正交设计
absorbing material
radar cross section(RCS)
reflectivity
finite difference time domain method
orthogonal design
