| 双层梯度蜂窝吸波结构优化设计 |
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| 引用本文： | 贺榆波,杨青真,施永强,高翔,王旭飞.双层梯度蜂窝吸波结构优化设计[J].推进技术,2022,43(10):422-430. |
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| 作者姓名： | 贺榆波 杨青真 施永强 高翔 王旭飞 |
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| 作者单位： | 西北工业大学 |
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| 基金项目： | 等离子体动力学国防科技重点实验室基金 |
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| 摘 要： | 设计了一种带蒙皮和金属底板的双层梯度蜂窝吸波结构，并利用Hashin-Shtrikman（HS）模型获得其等效电磁参数。在此基础上，以反射率低于-10dB带宽最大为优化目标，利用保收敛粒子群优化算法（Guarantee Convergence Particle Swarm Optimization，GCPSO）对四种不同排序方案的双层梯度蜂窝吸波结构进行优化设计。结果表明，入射电磁波的角度和极化方式以及吸波材料的选择、排序和厚度对双层梯度蜂窝结构的吸波性能有很大的影响；不同入射角度下TM极化时的吸波特性明显优于TE极化，在入射角为60^°时最为明显；对比四种方案优化结果显示，case 1方案由于选用损耗角较小的吸波材料充当透波层，分布于蒙皮下面，而选用损耗角较大的吸波材料作吸收层，并置于吸波结构底层，因而具有最大的优化目标函数，吸波效果最佳，且蜂窝高度仅为具有相同吸波效果的case 3方案的49.44%。因此，选择case 1方案作为本文最终优化结果。
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| 关 键 词： | 双层梯度蜂窝吸波结构 吸波材料 反射率 优化设计 阻抗匹配 保收敛粒子群优化算法 |
| 收稿时间： | 2021/6/2 0:00:00 |
| 修稿时间： | 2022/9/14 0:00:00 |
Optimization Design of Double-Layer Grading Honeycomb Absorbing Structure |
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| HE Yu-bo,YANG Qing-zhen,SHI Yong-qiang,GAO Xiang,WANG Xu-fei.Optimization Design of Double-Layer Grading Honeycomb Absorbing Structure[J].Journal of Propulsion Technology,2022,43(10):422-430. |
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| Authors: | HE Yu-bo YANG Qing-zhen SHI Yong-qiang GAO Xiang WANG Xu-fei |
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| Affiliation: | Northwestern Polytechnical University |
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| Abstract: | A double-layer grading honeycomb radar absorbing structure (RAS) with skin and metal base plate was designed, and its equivalent electromagnetic parameters were obtained by using Hashin-Shtrikman (HS) model. Then, the Guarantee Convergence Particle Swarm Optimization (GCPSO) was adopted for the optimization design of the double-layer grading honeycomb RAS with four different material ordering schemes, and the optimization objective was to maximize the bandwidth with the reflection coefficient below -10dB. The results show that the angle and polarization of the incident electromagnetic wave as well as the selection, order and thickness of the radar absorbing materials (RAM) have great effects on the absorbing performance of the double-layer grading honeycomb RAS. The absorption characteristics under TM polarization are better than that of TE polarization at different incident angles, which is most obvious when the incident angle is 60°. The comparison of the optimization results of the four schemes shows that in case 1, the RAM with small loss angle is selected as the transmission layer and distributed under the skin, while the RAM with large loss angle is selected as the absorbing layer, which is placed at the bottom of the grading honeycomb RAS. Therefore, case 1 has the largest objective function value and better absorbing performance, and its height is only 49.44% of that of case 3, which has similar absorbing characteristics. Based on this, the result of case 1 is selected as the final optimization result of this paper. |
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| Keywords: | Grading design Double-layer honeycomb structure Radar absorbing material Reflection coefficient Optimization design Impedance matching Guarantee convergence particle swarm optimization |
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