摘要
为了在设计阶段更好地预测和评价织物的屏蔽性能,文章采用CST微波工作室建立了基于法兰同轴测试原理的织物屏蔽效能仿真模型,分析了电磁屏蔽织物两种等效模型的适用范围,并通过织物屏蔽效能测试验证了仿真的准确性。结果表明:仿真模型能够模拟法兰同轴装置对试样屏蔽效能的测试过程;网格模型可作为镀银长丝织物的仿真等效模型,且当织物中纱线截面短轴尺寸小于0.05 mm、孔径率小于0.30时,织物结构可简化为平板模型;不同嵌织比、不同层数的镀银长丝嵌织织物屏蔽效能测试结果与仿真结果在数值和变化趋势上基本一致,平均误差在6%以内,证明采用此仿真模型预测镀银长丝织物屏蔽效能是可行的。
With the rapid development of information technology,the application of electronic equipment in communication,transportation,finance and other fields increases rapidly,resulting in increasingly severe electromagnetic environment in space.The electromagnetic shielding material is one of the main means to deal with the threat of electromagnetic environment.Among the commonly used electromagnetic shielding materials,the electromagnetic shielding fabric has been widely used because of its characteristics of softness,light weight and high strength.In the development process of the electromagnetic shielding fabric,the development cycle is long because of the complex fabric structure and many influencing factors.In addition,due to the softness of the fabric and the chance of manual operation,the test results will be unstable.Meanwhile,the test and evaluation of the shielding efficiency can only be carried out after the production of the fabric,which further increases the design cycle and experiment cost of the electromagnetic shielding fabric.Therefore,it has become a research hotspot to use scientific and effective simulation methods to predict the shielding efficiency in fabric design stage.In order to guide the actual production and research,we developed a fabric shielding efficiency simulation method in the frequency range of 0.03-1.50 GHz,aiming at the testing method of flange coaxial fabric shielding efficiency with good platform performance and simple operation.Firstly,the structure model of the flange-coaxial device was constructed by CST microwave studio.Combined with the shielding efficiency test principle of the flange-coaxial method,simulation parameters were set and preliminary simulation was carried out to confirm the transmission performance of the device.Then,two equivalent models of the electromagnetic shielding fabric were established and their application range was analyzed.Finally,the shielding efficiency of silver-coated filament fabrics with different interweave spacing and layers was calculated by
作者
孙娜
徐阳
SUN Na;XU Yang(Key Laboratory of Science&Technology of Eco-Textile,Ministry Education,Jiangnan University,Wuxi 214122,China)
出处
《丝绸》
CAS
CSCD
北大核心
2023年第5期52-58,共7页
Journal of Silk
基金
中央高校基本科研业务费专项资金项目(JUSRP52007A)。
关键词
法兰同轴法
镀银长丝织物
电磁屏蔽织物
织物模型
电磁仿真
屏蔽效能
flange coaxial method
silver-coated filament fabric
electromagnetic shielding fabric
fabric model
electromagnetic simulation
shielding efficiency
