纬编针织物电磁屏蔽效能CST仿真分析
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摘要
为探究电磁波在针织物中的传播规律,用SolidWorks软件对纬编针织结构进行微观建模,利用CST微波工作室建立仿真模型。采用有限积分法计算了0～18 GHz波段针织物的电导率、织物组织结构、电磁波入射角、轴向衬纱层数及方向对屏蔽效能的影响。结果表明:屏蔽效能随织物电导率增大而呈非线性提高;电磁波入射角增大引起针织物表面极化电流变化;多层轴向导电纱的衬入有效地改变了针织物性能,屏蔽效能更佳。仿真计算结果对针织物模型有良好的适用性,可为设计开发高性能柔性屏蔽针织物材料提供理论参考。
In order to study the propagation law of electromagnetic wave in knitted fabric,the microstructure of weft-knitted fabric was modeled by SWorks software,and the simulation model was established by CST microwave studio. The finite integral method was adopted to compute shielding effectiveness in 0—18 GHz range,including different conductivities,fabric structure,layer and direction of axial yarn and different dence angles of electromagnetic wave. The result shows that the shielding effectiveness increases nonlinearly with the increase of the conduc of the fabric. The electromagnetic wave incidence angle increase would cause the polarization effect of surface current density on the knitted ric. The lining of multilayer axial conductive yarn can change the properties of knitted fabric effectively and the shielding efficiency is better. simulation result has universal applicability and provides a theoretical basis for optimizing design of high performance flexible shielding knitted ric.
In order to study the propagation law of electromagnetic wave in knitted fabric,the microstructure of weft-knitted fabric was modeled by SWorks software,and the simulation model was established by CST microwave studio. The finite integral method was adopted to compute shielding effectiveness in 0—18 GHz range,including different conductivities,fabric structure,layer and direction of axial yarn and different dence angles of electromagnetic wave. The result shows that the shielding effectiveness increases nonlinearly with the increase of the conduc of the fabric. The electromagnetic wave incidence angle increase would cause the polarization effect of surface current density on the knitted ric. The lining of multilayer axial conductive yarn can change the properties of knitted fabric effectively and the shielding efficiency is better. simulation result has universal applicability and provides a theoretical basis for optimizing design of high performance flexible shielding knitted ric.
引文
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2 Ghosh S,Remanan S,Mondal S,et al.Chemical Engineering Journal,2018,344,138.
3 He L,Cai Y J,Li Q.Materials Review A:Review Papers,2018,32(4),1107(in Chinese).何林,蔡永军,李强.材料导报:综述篇,2018,32(4),1107.
4 Wang J Z,Xi Z P,Tang H P,et al.Materials Review A:Review Papers,2012,26(10),33(in Chinese).王建忠,奚正平,汤慧萍,等.材料导报:综述篇,2012,26(10),33.
5 Chu L,Wen S.Knitting Industries,2011(6),18(in Chinese).褚玲,文珊.针织工业,2011(6),18.
6 Wen S.Journal of Textile Research,2004(6),79(in Chinese).文珊.纺织学报,2004(6),79.
7 Li L,Liang R R,Xiao H,et al.New Chemical Materials,2017(9),156(in Chinese).李丽,梁然然,肖红,等.化工新型材料,2017(9),156.
8 Cheng K B,Ramakrishna S,Lee K C.Composites Part A:Applied Scie-nce and Manufacturing,2000,31(10),1039.
9 Lin Z,Lou C,Pan Y,et al.Composites Science and Technology,2017,141,74.
10 Xiao H,Tang Z H,Wang Q,et al.Journal of Textile Research,2015(2),35(in Chinese).肖红,唐章宏,王群,等.纺织学报,2015(2),35.
11 Xiao H,Shi M W,Chao S,et al.Journal of Textile Research,2015(12),25(in Chinese).肖红,施楣梧,钞杉,等.纺织学报,2015(12),25.
12 Li Q J,liu C L,Zhou M,et al.Journal of Functional Materials,2013(14),2041(in Chinese).李奇军,刘长隆,周明,等.功能材料,2013(14),2041.
13 Guan F,Xiao H,Shi M,et al.Textile Research Journal,2016,88(5),566.
14 Guan F,Xiao H,Shi M,et al.Textile Research Journal,2016,86(20),2169.
15 Su Q C,Zhao X M,Li W B,et al.Journal of Textile Research,2016(2),155(in Chinese).苏钦城,赵晓明,李卫斌,等.纺织学报,2016(2),155.
16 Wang S J.Simulation research on three-dimensional fabric of weft knitted based on computer vision technology.Master’s Thesis,Zhejiang University of Technology,China,2012(in Chinese).王少俊.基于计算机视觉技术的纬编针织物三维仿真研究.硕士学位论文,浙江理工大学,2012.
17 Zhu Jinquan.New Technology & New Process,2009(2),41(in Chinese).朱金权.新技术新工艺,2009(2),41.