Journal of Astronautics ›› 2021, Vol. 42 ›› Issue (1): 74-82.doi: 10.3873/j.issn.1000-1328.2021.01.008

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Force Thermal Electricity Integration Analysis of Large scared Thin walled Structures

HE Dong ze, LI Yan bin, CHEN Qiang, LIU Jian, TAN Fu ying, FEI Qing guo   

  1. 1. Engineering Research Center of Aerospace Machinery, Southeast University, Nanjing 211189, China2. School of Mechanical Engineering, Southeast University, Nanjing 211189, China3. Beijing Aerospace Technology Institute, Beijing 100074, China
  • Received:2020-03-02 Revised:2020-06-08 Online:2021-01-15 Published:2021-01-25

Abstract: Based on the finite element method multi level fast multi pole method (FEM MLFMM), a force thermal electricity integration analysis method of radome is proposed in this paper. A thin walled plate is taken as the research object to verify the accuracy of the integrated analysis method. Then, taking a large scale radome as the research object, the integrated analysis of force, heat and electricity under aerodynamic and aerodynamic thermal loads is carried out to evaluate the strength performance of the structure under force/thermal environment. The influence of force/thermal load on the electromagnetic wave transmission performance of the structure is investigated. The results show that the proposed integrated analysis method achieves high precision. Taking the aerodynamic load into consideration, the radomes transmission performance decreases while the drop amplitude increases with the increase of aerodynamic load. The change of material electromagnetic parameters caused by high temperature has great influence on the transmission performance of the radome. In the design stage of radome, the influence of aerodynamic heat and aerodynamic load on its electromagnetic performance should be considered.

Key words: Aerodynamic thermal load, Aerodynamic force load; Radome, Transmittance, Integrated analysis

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