1. Thermo-mechanical buckling and sound radiation characteristics of 3D graphene porous core curved sandwich panels with composite facings.
- Author
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Reddy, R. Kiran Kumar, Veerappan, AR., George, Nivish, and Bhagat, Vinod
- Subjects
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ACOUSTIC radiation , *MECHANICAL loads , *SHEAR (Mechanics) , *SOUND pressure , *GRAPHENE , *SANDWICH construction (Materials) , *MECHANICAL buckling - Abstract
Buckling and sound radiation characteristics of curved sandwich panels subjected to combined thermo-mechanical loads are presented in the paper. The panel comprises a 3-D functionally graded graphene porous core sandwiched between FG-V Λ CNT reinforced composite face sheets (3DGrF-CF). The governing differential equations of 3DGrF-CF sandwich panels are derived using the parabolic shear deformation theory (PSDT), and the vibration responses are predicted using Navier's approach. The vibration response thus obtained is fed into the Rayleigh integral to capture the acoustic pressure. The buckling and sound radiation characteristics were found to vary significantly with the core's porosity coefficient and porosity grading pattern. However, the impact of this influence also depends on the magnitude of thermal & mechanical loading. This implies that selecting a core for acoustic comfort depends on the dominance of loading conditions and is illustrated using octave band analysis. • Buckling & vibro-acoustic analysis of 3DGrF-CF panels under thermo-mechanical loads. • Analytical prediction using Navier's & Rayleigh's approach considering PSDT. • Optimum porosity coefficient & grading pattern for different loading conditions. [Display omitted] [ABSTRACT FROM AUTHOR]
- Published
- 2024
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