The buckling behavior of radome with different braided angles based on CFRP

Radomes with traditional splicing structure has non-entirety failures of joins and rivets, so it cannot give full play to the structure's carrying efficiency after shocking. A new kind of radome is put forward, an improved version of the traditional splicing structure, with Carbon Fiber Reinforced Polymer (CFRP) structure. We combined theoretical analysis, finite element simulation and experimental test as well as compared and analyzed compressed cloud picture of displacement and stress distribution of radomes with two braided angles structures (90° and 60°) in order to study the deformation and stress capacity of radome after stressing. Simulation result: the compressed displacement of two kinds of radomes increases linearly, compressed stress diagram increases in a jagged way liking a parabola. Under the same compressed displacement, braided angle of 90° enjoys bigger compressed stress than that of 60°; under the same load, braided angle of 90° enjoys smaller compressed displacement than that of 60° with less joints cracking. The experiment shows that some of the joints cracked because the connection between braiding joints coupled. But the stressing deformation and stress development of radome match the simulation results basically.