Volume 37 Issue 4
Apr.  2022
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LIU Chao, LIU Wenguang, LÜ Zhipeng, ZHANG Yuhang. Analysis on traveling wave modal frequency of a rotating FGMs laminated cylindrical shell[J]. Journal of Aerospace Power, 2022, 37(4): 721-733. doi: 10.13224/j.cnki.jasp.20210029
Citation: LIU Chao, LIU Wenguang, LÜ Zhipeng, ZHANG Yuhang. Analysis on traveling wave modal frequency of a rotating FGMs laminated cylindrical shell[J]. Journal of Aerospace Power, 2022, 37(4): 721-733. doi: 10.13224/j.cnki.jasp.20210029

Analysis on traveling wave modal frequency of a rotating FGMs laminated cylindrical shell

doi: 10.13224/j.cnki.jasp.20210029
  • Received Date: 2021-01-19
  • Publish Date: 2022-04-28
  • For prompting the application of functionally graded materials (FGMs) in the fields of engines,missiles and rockets,the traveling wave modal frequencies of rotating FGMs laminated cylindrical shell were studied.The Voigt model and Sigmoid volume fraction were employed to describe the material properties of the FGMs laminated cylindrical shell.The energy expression of the rotating FGMs laminated cylindrical shell was derived with the Coriolis force,centrifugal inertial force,hoop initial tension and thermal internal force involved.The modal frequency equation of the FGMs laminated cylindrical shell with arbitrary boundary conditions was derived by using the Chebyshev orthogonal polynomial as the admissible displacement function.And the effects of material components,sandwich thickness,temperature gradient and spring stiffness coefficients on the modal frequency of the FGMs laminated cylindrical shell were discussed.Results indicate that the sandwich thickness is more sensitive to the traveling wave mode than the Sigmoid volume fraction index;the short thin-walled cylindrical shell is more sensitive to boundary conditions and instability than the long thin-walled structures at high rotation speeds;the axial spring stiffness has a greater effect on the traveling wave mode than other spring stiffness.

     

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