| 结构型吸波材料电磁特性的设计计算 |
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| 引用本文： | 王海风,徐志伟. 结构型吸波材料电磁特性的设计计算[J]. 机械科学与技术, 2008, 27(11) |
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| 作者姓名： | 王海风 徐志伟 |
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| 作者单位： | [1]中国飞行试验研究院航空电子研究所,西安710089 [2]南京航空航天大学航空宇航学院,南京210016 |
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| 摘 要： | 结构型吸波材料兼具吸波与承载的双重功能,且具有可设计性,是一个重要的吸波材料的研究方向。夹芯结构吸波复合材料因其质轻、强度高,又能较好地吸收电磁波而广泛应用于飞机的机翼、尾翼和机身等部位。应用时域有限差分法(FDTD)建立正六边形蜂窝夹芯结构和波纹板型夹芯结构的电磁散射模型,通过数值仿真手段,计算了两种夹芯吸波结构和全金属结构的RCS值,对不同结构形状的夹芯结构的吸波性能进行了分析。
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| 关 键 词： | 吸波材料 夹芯结构 时域有限差分法 RCS |
Design and Calculation of Electromagnetic Characteristics of Structure Absorbent Materials |
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| Abstract: | Structural radar absorption material possesses both wave absorption and load bearing functions.Microwave-absorbing composite sandwich structures have been widely used because of its light weight,high strength as well as perfect property of electromagnetic wave absorption.The finite-difference time-domain(FDTD) method has been applied to the numerical simulation of electromagnetic scattering for equilateral-hexagon honeycomb sandwich structure and corrugated plate sandwich structure radar absorbing materials.RCS(radar cross section) values of two types of structural wave absorbing materials as well as complete metal structure,which have the same dimension,have been computed by means of numerical simulation.Moreover,electromagnetic scattering characteristics of different shape honeycomb and corrugated plate structures are also studied respectively.Finally,stealth performance curves of honeycomb structure are obtained with respect to different incident frequencies(X-band). |
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| Keywords: | radar absorption material sandwich structure FDTD RCS(radar cross section) |
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