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Steel and Composite Structures Volume 41, Number 6, December25 2021 , pages 805-820 DOI: https://doi.org/10.12989/scs.2021.41.6.805 |
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Buckling and vibration of porous sandwich microactuator-microsensor with three-phase carbon nanotubes/fiber/polymer piezoelectric polymeric nanocomposite face sheets |
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Ali Ghorbanpour Arani, Borhan Rousta Navi and Mehdi Mohammadimehr
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| Abstract | ||
| In this research, the buckling and free vibration of three-phase carbon nanotubes/ fiber/ polymer piezoelectric nanocomposite face sheet sandwich microbeam with microsensor and micro-actuator surrounded in elastic foundation based on modified couple stress theory (MCST) is investigated. Three types of porous materials are considered for sandwich core. Higher order (Reddy) and sinusoidal shear deformation beam theories are employed for the displacement fields. Sinusoidal surface stress effects are extracted for sinusoidal shear deformation beam theory. The equations of motion are derived by Hamilton's principle and then the natural frequency and critical buckling load are obtained by Navier's type solution. The determined results are in good agreement with other literatures. The detailed numerical investigation for various parameters is performed for this microsensor-microactuator. The results reveal that the microsensor-microactuator enhanced by increasing of Skempton coefficient, carbon nanotubes diameter length to thickness ratio, small scale factor, elastic foundation, surface stress constants and reduction in porous coefficient, micro-actuator voltage and CNT weight fraction. The valuable results can be expedient for micro-electro-mechanical (MEMS) and nano-electro-mechanical (NEMS) systems. | ||
| Key Words | ||
| buckling; vibration; micro-actuator, microsensor; porous polymeric piezoelectric nanocomposite sandwich microbeam; sinusoidal and higher order shear deformation theories; surface stress effects | ||
| Address | ||
| Ali Ghorbanpour Arani:Department of Solid Mechanics, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran/ Department of Civil Engineering Institute of Nanoscience & Nanotechnology, University of Kashan, Kashan, Iran Borhan Rousta Navi:Department of Solid Mechanics, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran Mehdi Mohammadimehr:Department of Solid Mechanics, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran | ||