Mahesh, V and Mahesh, V and Ponnusami, SA (2023) Nonlinear active control of thermally induced pyro-coupled vibrations in porous-agglomerated CNT core sandwich plate with magneto-piezo-elastic facings. In: Acta Mechanica .
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Abstract
In this article, the damped nonlinear transient response of a smart sandwich plate (SSP) comprising of agglomerated CNT-reinforced porous nanocomposite core with multifunctional magneto-piezo-elastic (MPE) facesheets, subjected to the thermal environment, is numerically investigated. The synergistic influence of agglomeration, porosity and pyro-coupling on vibration control is studied for the first time under the finite element framework. The attenuation of the vibrations is caused by active constrained layer damping (ACLD) treatment. The kinematics of the plate is based on the layer-wise shear deformation theory and von-Karman’s nonlinearity. The viscoelastic properties of the ACLD patch and CNT agglomeration of the core are mathematically modelled using Golla–Hughes–McTavish and Eshelby–Mori–Tanaka methods, respectively. A comprehensive examination of the inter-related effects of different agglomeration states, porosity distributions and thermal loading profiles has been performed. The new insights on controlling pyro-coupled induced vibrations of smart sandwich plates by supplying control voltage directly to the MPE facesheets without ACLD treatment have been discussed thoroughly. The numerical analysis confirms the significant effects of pyro-coupling associated with active vibration control response of SSP.
| Item Type: | Journal Article |
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| Publication: | Acta Mechanica |
| Publisher: | Springer |
| Additional Information: | The copyright for this article belongs to the author. |
| Keywords: | Agglomeration; Porosity; Porous plates; Shear deformation; Transient analysis; Vibration analysis; Vibration control; Viscoelasticity, Active constrained layer damping; Active control; Coupled vibrations; Damping treatment; Face sheets; Nonlinear transient response; Porous nanocomposites; Sandwich plates; Thermal environment; Thermally induced, Magnetos |
| Department/Centre: | Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering) |
| Date Deposited: | 01 Aug 2023 05:06 |
| Last Modified: | 01 Aug 2023 05:06 |
| URI: | https://eprints.iisc.ac.in/id/eprint/82741 |
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