应用数学和力学2024,Vol.45Issue(8) :1096-1105.DOI:10.21656/1000-0887.450102

基于碳纤维的层合结构双极化电磁吸波及其弯曲性能设计

Electromagnetic Wave Dual-Polarized Absorption and Flexural Performance Design of Composite Laminates Based on Carbon Fibers

纪正江 程琳豪 郑锡涛 闫雷雷
应用数学和力学2024,Vol.45Issue(8) :1096-1105.DOI:10.21656/1000-0887.450102

基于碳纤维的层合结构双极化电磁吸波及其弯曲性能设计

Electromagnetic Wave Dual-Polarized Absorption and Flexural Performance Design of Composite Laminates Based on Carbon Fibers

纪正江 1程琳豪 1郑锡涛 1闫雷雷1
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作者信息

  • 1. 西北工业大学 航空学院,西安 710072
  • 折叠

摘要

针对现有飞行器复合材料蒙皮难以兼顾承载性能和吸波性能的问题,利用碳纤维预浸料独特的力电特性构造了碳纤维双极化吸波层合结构(carbon fiber dual-polarized absorbing laminated structure,CFDALS).通过在玻璃纤维层合结构中引入双向碳纤维阵列结构,赋予层合结构双极化电磁波吸收特性,同时利用碳纤维反射层优异的承载性能来增强结构力学性能.电磁仿真结果表明,该结构对TE极化电磁波在 8~18 GHz频带、0°~45°入射角,同时对TM极化电磁波在 5~18 GHz频带、0°~60°入射角下平均吸收率均达到 90%以上.三点弯曲仿真结果表明,结构在实现双极化电磁吸波的同时,在碳纤维阵列两个排列方向上表现出较高的比弯曲强度、比弯曲刚度.通过在玻璃纤维预浸料中引入双向排列的碳纤维预浸料并进行一体化设计,在结构具备双向优异承载性能的同时实现了双极化电磁吸波性能的显著增强,为飞行器蒙皮隐身承载一体化设计提供了一种新的解决方案.

Abstract

To address the challenge of balancing load-bearing and electromagnetic(EM)wave absorption prop-erties in aircraft composite skin,the outstanding mechanical and electrical characteristics of carbon fiber(CF)prepregs were utilized to construct a carbon fiber dual-polarized absorbing laminated structure(CFDALS).The bidirectional CF arrays were introduced into the glass fiber(GF)laminated structure,to endow the laminated structure with dual-polarized EM wave absorption performances.Additionally,the excellent load-bearing capac-ity of the CF reflector was used to enhance the mechanical properties.Simulation results indicate that,the CFDALS achieves an average absorptivity over 90%within the 8~18 GHz frequency band at incident angles of 0°~45°,and within the 5~18 GHz band at incident angles of 0°~60° for TE and TM polarized EM waves,respec-tively.The 3-point bending simulation results show that,the CFDALS exhibits higher specific flexural strengths and stiffnesses along 2 directions of the CF arrays while achieving dual-polarized EM wave absorption.Incorpo-ration of bidirectionally arranged CF prepregs into GF prepregs enhances the dual-polarized EM wave absorp-tion performance and the bidirectional flexural performance of the CFDALS simultaneously.The work provides a novel solution for the EM wave absorbing and load-bearing integrated design for aircraft composite skin appli-cations.

关键词

碳纤维预浸料/层合结构/双极化/电磁吸波/力学性能

Key words

carbon fiber prepreg/laminated structure/dual-polarized/electromagnetic wave absorption/me-chanical property

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基金项目

国家自然科学基金(12372141)

出版年

2024
应用数学和力学
重庆交通学院

应用数学和力学

CSTPCDCSCD北大核心
影响因子:0.778
ISSN:1000-0887
参考文献量25
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