Dual-band and thermo-mechanical design method for radome walls with graded porous structure

摘要

This paper provides a method for design of high-temperature dual-band radome walls with graded porous structure. Both of the dual-band performances and the thermo-mechanical properties under loading-free and loading conditions of the proposed structures are taken into account. Results demonstrate the effectiveness of the method for design of high-temperature dual-band structures, of which the design frequency can be arbitrarily selected and subsequently the pass-bands are selectable, rather than design of a structure with specific dimensions and pass-bands. Results also show that the dual-band structures with graded porous structure can achieve better thermo-mechanical properties compared to traditional A-sandwich structures, and assembly stress can enhance the thermal and mechanical bearing capabilities of the high-temperature dual-band structures as well.