Force-Thermal-Electricity Integration Analysis of Large-scared Thin-walled Structures

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 radome's 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.