| Citation: | XU Zhuo, XU Peiyao, ZHENG Lisheng, et al. Natural characteristics calculation and analysis of fiber reinforced truncated conical shell[J]. Journal of Aerospace Power, 2024, 39（11）：20220876 doi: 10.13224/j.cnki.jasp.20220876
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The natural characteristics of composite conical shells were calculated and verified by combining theory and experiment. Based on the classical lamination theory and considering the influence of anisotropy of composite structures, the theoretical model was established by introducing half-cone angle coefficients. Then, the natural characteristics of the structures were obtained by utilizing the Rayleigh-Ritz method and orthogonal polynomial method. A natural characteristic experiment system of TC300/epoxy resin composite conical shell was established and the natural characteristics were acquired. The results showed that the error between the calculated and test results was between 1.4% and 2.3%, which further verified the correctness of the proposed model. Finally, the influences of different parameters, such as the half cone angle, the boundary conditions and the fiber ply angles, on the natural characteristics of the structure were discussed.
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