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Transient response of porous FG nanoplates subjected to various pulse loads based on nonlocal stress-strain gradient theory

Mirjavadi, S ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1016/j.euromechsol.2018.11.004
  3. Publisher: Elsevier Ltd , 2019
  4. Abstract:
  5. Based on nonlocal strain gradient theory (NSGT), transient behavior of a porous functionally graded (FG) nanoplate due to various impulse loads has been studied. The porous nanoplate has evenly and unevenly distributed pores inside its material structure. Impulse point loads are considered to be rectangular, triangular and sinusoidal types. These impulse loads lead to transient vibration of the nanoplate which is not studied before. NSGT introduces a nonlocal coefficient together with a strain gradient coefficient to characterize small size influences due to non-uniform stress and strain fields. Galerkin's approach has been performed to solve the governing equations and also inverse Laplace transform method is used to obtain transient response due to impulse loads. It is explained in this research that the transient response of a nanoplate is dependent on nonlocal coefficient, strain gradient parameter, pore dispersion, pore amount, type of impulse load and loading time. © 2018 Elsevier Masson SAS
  6. Keywords:
  7. FG nanoplate ; Nonlocal strain gradient elasticity ; Transient response ; Inverse problems ; Laplace transforms ; Nanostructures ; Porosity ; Governing equations ; Impulse load ; Inverse laplace transform ; Nano-plate ; Nonlocal coefficients ; Strain gradient elasticity ; Strain gradient theory ; Transient vibrations ; Transient analysis
  8. Source: European Journal of Mechanics, A/Solids ; Volume 74 , 2019 , Pages 210-220 ; 09977538 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0997753818307411