针对船用金属屏蔽丝网结构参数对其屏蔽性能的影响问题，重点讨论屏蔽丝网编织线直径和单位载线编织线数量对金属编织网覆盖率及屏蔽性能的影响。基于CST Cable Studio仿真平台，建立电缆收/发仿真模型，对不同线径、单位载线编织线数目下屏蔽丝网屏蔽效果进行定量预估和对比分析，研究结果表明，在载线数量和方向角一定的情况下，金属屏蔽丝网的覆盖率随着编织线直径和单位载线编织线数目的减少而减少，对于特定频率，当金属屏蔽丝网覆盖率高于70%时，覆盖率变化对于金属屏蔽丝网的屏蔽效果影响较小，当丝网线径和编织线数目进一步降低时，金属屏蔽丝网的屏蔽效果迅速降低；此外厚度对于金属屏蔽丝网屏蔽效果也有一定的影响。
Aming at the problem of influence of the structure parameter on the shielding effectiveness of the metal shield silk screen, the influence of the diameter of the plait string and the number of the plait string in one year string on the cover rate and shielding effectiveness of the metal shield silk screen is studied in this paper. Based on the application of CST cable studio, the 3D simulation models of launching and receiving cables are established and the system with different diameter of the plait string and the number of the plait string in one year string are established and influence of the grounding resistance on the shielding effectiveness of the metal shield silk screen are analyzed, respectively. The results show that, when the number of year string and angle is constant, the cover rate of the metal shield silk screen becomes small with the decreasing of the diameter of the plait string and the number of the plait string. For some frequency, when the cover rate of the metal shield silk screen is bigger than 70%, the influence of the cover rate of the metal shield silk screen on the shielding effectiveness is relatively small and, when the diameter of the plait string and the number of the plait string in one year string become smaller, the shielding effectiveness of the metal shield silk screen becomes worse quickly. On the other hand, the thickness would also affect the shielding effectiveness of the metal shield silk screen.
2016,38(10): 129-132 收稿日期：2016-3-2
DOI：10.3404/j.issn.1672-7619.2016.10.026
分类号：O441.4;O441.5
基金项目：国家自然科学基金资助项目（61201052）
作者简介：周畅(1986-),男,工程师,主要从事舰船电磁场仿真、电磁兼容设计与研究。
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