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Pull-in instability
of multilayered quasicrystal cantilever nanoactuator with
bonding imperfections based on nonlocal theory
Yunzhi Huang, Huayong Zheng, Xiuhua Chen and Miaolin Feng |
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Vol. 18 (2023), No. 4, 479–502
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Abstract |
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Quasicrystal (QC) nanostructures are promising for use as sensors/detectors in nanoelectromechanical systems. For this application, size dependence, surface loading, and interlaminar bonding imperfections should be considered in the theoretical analysis. Herein, the pull-in instability of a QC cantilever nanoactuator incorporating the piezoelectric effect, size effect, and nanoscale interactions is investigated on the basis of nonlocal elasticity theory. The nonlinear equilibrium differential equation of the model is derived using the variational method of the virtual displacement principle. The electrostatic instability and freestanding of nanoactuators under electrostatic and intermolecular forces are analyzed. In numerical examples, the pull-in phonon and phason displacements decrease with the increment of piezoelectric modulation voltage. The pull-in instability of the model occurs faster with the existence of the nonlocal effect, Casimir force, and interfacial imperfections. The displacement in the phason field is more sensitive to the initial gap than that in the phonon field. The results show the sensitivity and reliability of QCs as piezoelectric materials in cantilever nanoactuators. |
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Keywords
nanoactuator, multilayered cantilever, quasicrystals,
nonlocal effect, pull-in instability
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Milestones
Received: 12 September 2022
Revised: 17 January 2023
Accepted: 4 March 2023
Published: 30 May 2023
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Authors |
| Yunzhi Huang | |
| Department of Engineering
Mechanics School of Naval Architecture, Ocean and Civil Engineering Shanghai Jiao Tong University Shanghai China |
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| Huayong Zheng | |
| Shanghai Institute of Aerospace
System Engineering Shanghai China |
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| Xiuhua Chen | |
| School of Aeronautics and
Astronautics Shanghai Jiao Tong University Shanghai China |
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| Miaolin Feng | |
| Department of Engineering
Mechanics School of Naval Architecture, Ocean and Civil Engineering Shanghai Jiao Tong University Shanghai China |
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| © 2023 MSP (Mathematical Sciences Publishers). |
