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Thermal Buckling, Vibration and Damping Behavior of Viscoelastic-FGM Sandwich Doubly Curved Panels
https://orcid.org/http://orcid.org/0000-0003-2067-9332
Free vibration, damping and three-dimensional thermal buckling studies of the doubly curved sandwich viscoelastic-functionally graded (FG) material shell panels have been carried out under the high-temperature environments when subjected to uniaxial and biaxial uniform in-plane compressive loading. The sandwich-curved panels used in this analysis comprised of three layers. Base layer of the sandwich is made of aluminum, core layer of soft and thick viscoelastic material and the constraining top skin of FGM having the ceramic–metal (ZrO2/Ti-6Al-4 V) constituents, to incorporate the constrained layer damping (CLD) in the shell structure. The governing equation of motion has been derived through the Hamilton’s principle along with the finite element method (FEM). The influence of thermal environment or temperature gradient is considered to be imposed on the FGM top layer only, with uniform temperature distribution across the top surface of the layer. Unique temperature-dependent material constants have been considered to determine the influence of high-temperature environments on the three-dimensional thermal buckling response of the sandwich panel. The influence of various system parameters specifically top surface temperature, aspect ratio, shell geometries, core thickness ratio and power law index on the structure’s modal natural frequencies and modal loss factors has been investigated through parametric analyses. Thermal buckling and buckling response of the curved panels with respect to the parametric variations have also been presented subjected to the uniaxial and biaxial loadings. The contribution of FGM constraining skin is found presiding in many aspects toward strengthening the thermal buckling resistance of the curved sandwich panels.
Thermal Buckling, Vibration and Damping Behavior of Viscoelastic-FGM Sandwich Doubly Curved Panels
https://orcid.org/http://orcid.org/0000-0003-2067-9332
Free vibration, damping and three-dimensional thermal buckling studies of the doubly curved sandwich viscoelastic-functionally graded (FG) material shell panels have been carried out under the high-temperature environments when subjected to uniaxial and biaxial uniform in-plane compressive loading. The sandwich-curved panels used in this analysis comprised of three layers. Base layer of the sandwich is made of aluminum, core layer of soft and thick viscoelastic material and the constraining top skin of FGM having the ceramic–metal (ZrO2/Ti-6Al-4 V) constituents, to incorporate the constrained layer damping (CLD) in the shell structure. The governing equation of motion has been derived through the Hamilton’s principle along with the finite element method (FEM). The influence of thermal environment or temperature gradient is considered to be imposed on the FGM top layer only, with uniform temperature distribution across the top surface of the layer. Unique temperature-dependent material constants have been considered to determine the influence of high-temperature environments on the three-dimensional thermal buckling response of the sandwich panel. The influence of various system parameters specifically top surface temperature, aspect ratio, shell geometries, core thickness ratio and power law index on the structure’s modal natural frequencies and modal loss factors has been investigated through parametric analyses. Thermal buckling and buckling response of the curved panels with respect to the parametric variations have also been presented subjected to the uniaxial and biaxial loadings. The contribution of FGM constraining skin is found presiding in many aspects toward strengthening the thermal buckling resistance of the curved sandwich panels.
Thermal Buckling, Vibration and Damping Behavior of Viscoelastic-FGM Sandwich Doubly Curved Panels
https://orcid.org/http://orcid.org/0000-0003-2067-9332
Free vibration, damping and three-dimensional thermal buckling studies of the doubly curved sandwich viscoelastic-functionally graded (FG) material shell panels have been carried out under the high-temperature environments when subjected to uniaxial and biaxial uniform in-plane compressive loading. The sandwich-curved panels used in this analysis comprised of three layers. Base layer of the sandwich is made of aluminum, core layer of soft and thick viscoelastic material and the constraining top skin of FGM having the ceramic–metal (ZrO2/Ti-6Al-4 V) constituents, to incorporate the constrained layer damping (CLD) in the shell structure. The governing equation of motion has been derived through the Hamilton’s principle along with the finite element method (FEM). The influence of thermal environment or temperature gradient is considered to be imposed on the FGM top layer only, with uniform temperature distribution across the top surface of the layer. Unique temperature-dependent material constants have been considered to determine the influence of high-temperature environments on the three-dimensional thermal buckling response of the sandwich panel. The influence of various system parameters specifically top surface temperature, aspect ratio, shell geometries, core thickness ratio and power law index on the structure’s modal natural frequencies and modal loss factors has been investigated through parametric analyses. Thermal buckling and buckling response of the curved panels with respect to the parametric variations have also been presented subjected to the uniaxial and biaxial loadings. The contribution of FGM constraining skin is found presiding in many aspects toward strengthening the thermal buckling resistance of the curved sandwich panels.
Thermal Buckling, Vibration and Damping Behavior of Viscoelastic-FGM Sandwich Doubly Curved Panels
J. Inst. Eng. India Ser. D
Sahu, Nishant Kumar (Autor:in) / Biswal, Deepak Kumar (Autor:in) / Joseph, Shince V (Autor:in) / Prusty, Jagesh Kumar (Autor:in) / Mohanty, Sukesh Chandra (Autor:in)
Journal of The Institution of Engineers (India): Series D ; 105 ; 1753-1761
01.12.2024
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Thermal Buckling, Vibration and Damping Behavior of Viscoelastic-FGM Sandwich Doubly Curved Panels
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