Magneto-electro-mechanical vibration of porous functionally graded smart sandwich plates with viscoelastic core
| Autor: | Hamid Reza Talebi Amanieh, Arash Reza, S Alireza S Roknizadeh |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Mechanical Engineering Loss factor 02 engineering and technology 021001 nanoscience & nanotechnology Viscoelasticity Core (optical fiber) Vibration 020303 mechanical engineering & transports Mechanical vibration 0203 mechanical engineering General Materials Science Composite material 0210 nano-technology Porosity Magneto |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications. 235:653-670 |
| ISSN: | 2041-3076 1464-4207 |
| DOI: | 10.1177/1464420720976698 |
| Popis: | In this paper, the vibrations of a sandwich plate with functionally graded magneto-electro-elastic (FG-MEE) face sheets and porous and viscoelastic core were investigated. Power-law rule modified by two types of porosity distributions was used to model the FG-MEE plates. The plate with even porosity distribution was considered as the FG-MEE-I model, while the one with uneven porosity distribution was labeled as the FG-MEE-II model. The normal and shear stresses were considered in the core layer, and the interlayer was modeled by the standard linear solid scheme. First-order shear deformation plate theory was used to derive the governing equation of the sandwich panel including the FG-MEE plate and viscoelastic core interaction. The governing equations were solved by the Navier method. A detailed parametric analysis was conducted to assess the effects of electric and magnetic fields, core-to-face sheet thickness ratio, and power-law index on the linear vibration characteristics of sandwich plates with functionally graded MEE face sheets. It is observed that for the FG-MEE-I model, an increase in the porosity coefficient led to a reduction in the frequency of the FG-MEE sandwich plate. On the contrary, for the FG-MEE-II model, an increment in the porosity coefficient enhanced the natural frequency. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|