Structural optimization and simulation verification of the special vehicles shielding box based on electromagnetic shielding

doi:10.3969/j.issn.1674-8484.2023.06.004

Abstract

Abstract:

In order to meet the requirements of lightweight design and safety for specialized vehicles, and reduce electromagnetic interference, the study focused on the electromagnetic shielding box made of carbon fiber composite material for specialized vehicles. Simulation experiments on the design scheme of specialized vehicles were conducted using Ansys Electronics Desktop software. The influence of the thickness of the shielding box and the shape of the hole on the electromagnetic shielding performance was investigated, and lightweight design optimization was performed. The results show that the thickness of the box is positively correlated with the shielding efficiency under the electromagnetic interference of low frequency band and high frequency band. Under the same hole area, the shielding efficiency is better when the opening shape of the box is round, and the above factors have no obvious influence in the resonant frequency band. After lightweight design optimization, the shielding box structure of the vehicle achieves a shielding effectiveness of 46.3 dB and 32.2 dB in the low-frequency and high-frequency ranges, respectively, which meets the requirements of specialized vehicles for electro-magnetic shielding performance.

Key words: electromagnetic shielding, box structure, shielding performance optimization, simulation analysis

CLC Number:

CHEN Yizhe, YU Chengjie, YANG Yusen, HUO Jiachen, WANG Hui. Structural optimization and simulation verification of the special vehicles shielding box based on electromagnetic shielding[J]. Journal of Automotive Safety and Energy, 2023, 14(6): 681-687.

Figures/Tables 11

References 18

[1]	谢晨露, 张鲁鲁, 刘元军, 等. 导电填料在电磁屏蔽性能的研究与进展[J]. 纺织科学与工程学报, 2020, 37(3): 117-124.
	XIE Chenlu, ZHANG Lulu, LIU Yuanjun, et al. Research and progress of conductive fillers in electromagnetic shielding performance[J]. J Text Sci Engi, 2020, 37(3): 117-124. (in Chinese)
[2]	Turczyn R, Krukiewicz K, Katunin A, et al. Fabrication and application of electrically conducting composites for electromagnetic interference shielding of remotely piloted aircraft systems[J]. Composit Struct, 2020, 232: 111498 doi: 10.1016/j.compstruct.2019.111498 URL
[3]	王永胜, 郭文卿, 李伟. 某型雷达车辆驾驶舱强电磁防护技术研究[J]. 安全与电磁兼容, 2021(1): 63-66.
	WANG Yongsheng, GUO Wenqing, LI Wei. Research on strong electromagnetic protection technology in the cockpit of a certain type of radar vehicle[J]. Safe Electromag Compat, 2021(1): 63-66. (in Chinese)
[4]	WU Yi, YU Kesong, ZHANG Xiaoli, et al. Lightweight electromagnetic interference shielding poly (L-lactic acid)/poly (D-lactic acid)/carbon nanotubes composite foams prepared by supercritical CO₂ foaming[J]. Int'l J Biolog Macrom, 2022, 210: 11-20
[5]	Verma R, Thakur P, Chauhan A, et al. A review on MXene and its composites for electromagnetic interference (EMI) shielding applications[J]. Carbon, 2023, 208: 170-190 doi: 10.1016/j.carbon.2023.03.050 URL
[6]	王宪, 贺雍律, 唐俊, 等. Al颗粒夹层CFRP复合材料力学及电磁屏蔽性能[J]. 材料工程, 2023, 51(1): 140-147. doi: 10.11868/j.issn.1001-4381.2022.000450
	WANG Xian, HE Yongjin, TANG Jun, et al. Mechanical and electromagnetic shielding properties of Al particle sandwich CFRP composites[J]. Mater Engi, 2023, 51(1): 140-147. (in Chinese)
[7]	赵塔, 付彩欣, 刘雪明, 等. 轨道车辆碳纤维复合材料电磁屏蔽性能研究[J]. 机车电传动, 2020(4): 13-16.
	ZHAO Ta, FU Caixin, LIU Xueming, et al. Research on electromagnetic shielding performance of carbon fiber composite materials for rail vehicles[J]. Elect Driv Locomotive, 2020(4): 13-16. (in Chinese)
[8]	Munalli D, Dimitrakis G, Chronopoulos D, et al. Electromagnetic shielding effectiveness of carbon fibre reinforced composites[J]. Composit Part B: Engineering, 2019, 173: 106906.
[9]	ZHANG Hongyan, LI Jinyao, PAN Ying, et al. Flexible carbon fiber-based composites for electromagnetic interference shielding[J]. Rare Metals, 2022, 41(11): 3612-3629. doi: 10.1007/s12598-022-02057-3
[10]	葛继文, 陈旭, 崔健, 等. 碳纤维复合材料机箱及其核电磁脉冲防护性能[J]. 中国设备工程, 2020(24): 98-101.
	GE Jiwen, CHEN Xu, CUI Jian, et al. Carbon fiber composite chassis and its nuclear electromagnetic pulse protection performance[J]. Chin Plant Engi, 2020(24): 98-101. (in Chinese)
[11]	SHEN Wenyu, Estevez D, ZHOU Liping, et al. Stretchable silver@CNT-poly (vinyl alcohol) films with efficient electromagnetic shielding prepared by polydopamine functionalization[J]. Polymer, 2022, 238: 124413 doi: 10.1016/j.polymer.2021.124413 URL
[12]	刘琳, 张东. 电磁屏蔽材料的研究进展[J]. 功能材料, 2015, 46(3): 3016-3022.
	LIU Lin, ZHANG Dong. Research progress of electromagnetic shielding materials[J]. Funct Mater, 2015, 46(3): 3016-3022. (in Chinese)
[13]	国家市场监督管理总局, 国家标准化管理委员会. GB/T12190-2021: 电磁屏蔽室屏蔽效能的测量方法[S]. 2021.
	State Administration for Market Regulation, Standardization Administration. GB/T 12190-2021: Measurement method for shielding efficiency of electromagnetic shielding chamber[S]. 2021. (in Chinese)
[14]	Ashley T, Carrizosa E, Fernández-Cara E. Heliostat field cleaning scheduling for solar power tower plants: A heuristic approach[J]. Appl Energ, 2019, 235: 653-660 doi: 10.1016/j.apenergy.2018.11.004 URL
[15]	侯扬, 李伟. 电子设备机箱的电磁屏蔽结构设计及仿真[J]. 光电技术应用, 2018, 33(2): 59-62.
	HOU Yang, LI Wei. Design and simulation of electromagnetic shielding structure of electronic equipment chassis[J]. Optoelect Tech Appl, 2018, 33(2): 59-62. (in Chinese)
[16]	WANG Hao, TAO Jie, JIN Kai. The effect of MWCNTs with different diameters on the interface properties of Ti/CFRP fiber metal laminates[J]. Composit Struct, 2021, 266(1): 113818 doi: 10.1016/j.compstruct.2021.113818 URL
[17]	MA Rui, YUAN Nana, SUN Shichang, et al. Preliminary investigation of the microwave pyrolysis mechanism of sludge based on high frequency structure simulator simulation of the electromagnetic field distribution[J]. Biores Tech, 2017, 234: 370-379 doi: 10.1016/j.biortech.2017.02.076 URL
[18]	张春阳, 田小建, 王灵敏, 等. 孔隙结构金属板电磁屏蔽效能的实验研究[J]. 电子设计工程, 2014, 22(21): 15-18.
	ZHANG Chunyang, TIAN Xiaojian, WANG Lingmin, et al. Experimental study on electromagnetic shielding efficiency of metal plate with pore structure[J]. Elect Desig Engi, 2014, 22(21): 15-18. (in Chinese)

频率范围	测量值	数学表达式
50 Hz ~ 20 MHz	H₁、H₂	SE = 20 lg (H₁/ H₂)
20 ~ 300 / MHz	E₁、E₂	SE = 20 lg (E₁/ E₂)
0.3 ~ 100 GHz	E₁、E₂	SE = 20 lg (E₁/ E₂)

频率范围	测量值	数学表达式
50 Hz ~ 20 MHz	H₁、H₂	SE = 20 lg (H₁/ H₂)
20 ~ 300 / MHz	E₁、E₂	SE = 20 lg (E₁/ E₂)
0.3 ~ 100 GHz	E₁、E₂	SE = 20 lg (E₁/ E₂)