• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2025, Vol. 61 ›› Issue (16): 347-357.doi: 10.3901/JME.2025.16.347

• 交叉与前沿 • 上一篇    

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点阵结构天线窗力热电性能表征与耦合分析方法

葛明璇1,2, 杨利鑫1,2, 李彦斌1,2, 费庆国1,2   

  1. 1. 东南大学机械工程学院 南京 211189;
    2. 东南大学高速飞行器结构与热防护教育部重点实验室 南京 211189
  • 接受日期:2024-10-05 出版日期:2025-02-27 发布日期:2025-02-27
  • 作者简介:葛明璇,女,2000年出生。主要从事天线罩强度及电性能等方面的研究。E-mail:220220300@seu.edu.cn;李彦斌(通信作者),男,1986年出生,博士,副教授,博士研究生导师。主要从事飞行器结构设计等方面的研究。E-mail:LYB@seu.edu.cn
  • 基金资助:
    国家自然科学基金(52175220,52125209)、航空科学基金(2023Z011069001)、江苏省科技厅重点研发产业前瞻(BE2022158)和东南大学“仲英青年学者”支持计划资助项目

Mechanical-thermal-electromagnetic Performance Characterization and Coupling Analysis Method of Lattice Structure Antenna Window

GE Mingxuan1,2, YANG Lixin1,2, LI Yanbin1,2, FEI Qingguo1,2   

  1. 1. School of Mechanical Engineering, Southeast University, Nanjing 211189;
    2. Key Laboratory of Structure and Thermal Protection of High Speed Aircraft, Ministry of Education, Southeast University, Nanjing 211189
  • Accepted:2024-10-05 Online:2025-02-27 Published:2025-02-27

摘要: 点阵结构具有比刚度高、耐热性能好、透波性能优、可设计性强等优点,能够满足高速飞行器天线窗多功能的使用需求。针对点阵结构天线窗分析方法缺、设计迭代周期长的问题,提出一种针对点阵结构的力热电耦合分析方法。基于均匀化方法给出点阵结构力/热性能表征方法,基于S参数反演法给出点阵结构电磁性能表征方法,建立点阵结构力热电耦合分析方法;研究点阵结构设计参数对天线窗力学性能、热性能及电性能的影响规律,提出点阵天线窗力热电性能的关键设计指标。研究结果表明:所提出的点阵结构力热电耦合分析方法具有较好的精度,误差小于4.32%;胞元杆径与边长的比值是点阵结构的关键设计指标,点阵天线窗的力学、热学、电磁性能取决于胞元杆径与边长的比值,该值越大点阵天线窗的刚度越大、导热性能越好、透波性能越差。所提出的点阵结构力热电耦合分析方法为点阵天线窗的性能分析提供了一种解决方案。

关键词: 点阵结构, 性能表征, 力热电耦合分析, S参数反演, 均匀化方法

Abstract: The lattice structure has advantages such as high specific stiffness, good heat resistance, excellent transmission performance, and strong designability. It can meet the multifunctional requirements of antenna windows for high-speed aircraft. To address the issues of lacking analysis methods and long design iteration cycles for lattice antenna windows, a mechanical-thermal-electromagnetic coupling analysis method for lattice structures is proposed. The characterization methods for mechanical and thermal properties of lattice structures are provided based on homogenization method. The characterization methods for electromagnetic properties of lattice structures is provided based on S-parameter inversion method. The mechanical-thermal-electromagnetic coupling analysis method for ceramic lattice structures is established. The influence of design parameters on the mechanical, thermal, and electrical performance of the antenna window is studied. And the key design index of mechanical-thermal-electromagnetic performance of lattice antenna window is presented. The research results indicate that the proposed method for mechanical-thermal-electromagnetic coupling analysis of lattice structures has good accuracy, with an error of less than 4.32%. The ratio of cell rod diameter to side length is the key design index of lattice structure. The mechanical, thermal, and electromagnetic performance of the lattice antenna window depend on the ratio of the rod diameter to side length of the unit cell, with a larger ratio leading to greater stiffness, better thermal conductivity, and poorer transparency of the lattice antenna window. The proposed method for mechanical-thermal-electromagnetic coupling analysis of lattice structures provides a solution for the performance analysis of lattice antenna windows.

Key words: lattice structure, properties characterization, mechanical-thermal-electromagnetic coupling analysis, S-parameter inversion, homogenization method

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