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Smart Structures and Systems Volume 23, Number 5, May 2019 , pages 429-447 DOI: https://doi.org/10.12989/sss.2019.23.5.429 |
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Size-dependent magneto-electro-elastic vibration analysis of FG saturated porous annular/ circular micro sandwich plates embedded with nano-composite face sheets subjected to multi-physical pre loads |
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Saeed Amir, Ehsan Arshid and Mohammad Reza Ghorbanpour Arani
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| Abstract | ||
| The present study analyzed free vibration of the three-layered micro annular/circular plate which its core and face sheets are made of saturated porous materials and FG-CNTRCs, respectively. The structure is subjected to magneto-electric fields and magneto-electro-mechanical pre loads. Mechanical properties of the porous core and also FG-CNTRC face sheets are varied through the thickness direction. Using dynamic Hamilton\'s principle, the motion equations based on MCS and FSD theories are derived and solved via GDQ as an efficient numerical method. Effect of different parameters such as pores distributions, porosity coefficient, pores compressibility, CNTs distribution, elastic foundation, multi-physical pre loads, small scale parameter and aspect ratio of the plate are investigated. The findings of this study can be useful for designing smart structures such as sensor and actuator. | ||
| Key Words | ||
| free vibration; modified couple stress theory; porous material; carbon nanotubes reinforced composites; circular sandwich plate; pasternak foundation | ||
| Address | ||
| Saeed Amir and Ehsan Arshid: Department of Solid Mechanics, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran Mohammad Reza Ghorbanpour Arani: Electrical Engineering Department, Amirkabir University of Technology, Tehran, Iran | ||