期刊
THIN-WALLED STRUCTURES
卷 179, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.tws.2022.109547
关键词
Agglomeration; Active damping; Carbon-nanotubes; Magneto-electro-elastic; Sandwich structures
资金
- Royal Society, London, United Kingdom [NIF\R1\212432]
This study investigates the controlled nonlinear transient response of sandwich plates made of magnetoelectro-elastic facesheets and agglomerated carbon nanotube core under active constrained layer damping treatment. The proposed FE model integrates the coupling of magnetic, electric, and elastic fields with agglomeration and electromagnetic circuit effects, providing an important tool for smart structure design.
This article investigates the controlled nonlinear transient response of sandwich plates made of magnetoelectro-elastic (MEE) facesheets and agglomerated carbon nanotube (ACNT) core. The control is achieved by active constrained layer damping (ACLD) treatment which consists of piezoelectric (PE) and viscoelastic (VE) layers. The agglomeration is mathematically modelled using the Eshelby-Mori-Tanaka approach. The governing equations are derived under the framework of finite element (FE) methods using Hamilton's principle and condensation technique. The VE patch of the ACLD treatment is modelled through the Golla-Hughes- McTavish method. This evaluation has considered two states of agglomerations, such as complete and partial agglomeration. The proposed FE model facilitates the integration of the three-field (magnetic, electric and elastic) coupling with the agglomeration and electromagnetic circuit effects, which makes this work interesting. It acts as a ready tool for the realistic design of a smart structure and system. In addition, the computational efforts and efficiency of the proposed FE model prove to be better than the commercial numerical software. Extensive numerical examples are solved to assess the influence of CNT distributions, electromagnetic circuits, coupling, mechanical boundary conditions, thickness configuration and ACLD patch position. This work serves as a novel benchmark solution for further research on the active control of agglomerated CNT structures.
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