Fluid-conveying piezoelectric nanosensor: Nonclassical effects on vibration-stability analysis

In current study, surface/interface effects for pull-in voltage and viscous fluid velocity effects on dimensionless natural frequency (DNF) of fluid-conveying piezoelectric nanosensor (FCPENS) subjected to direct electrostatic voltage DC with nonlinear excitation, harmonic force and also viscoelastic foundation (visco-pasternak medium and structural damping) are investigated using Gurtin–Murdoch surface/interface (GMSIT) theory. For this analysis, Hamilton’s principles, the assumed mode method combined with Lagrange–Euler’s are used for the governing equations and boundary conditions. The effects of surface/interface parameters of FCPENS such as Lame’s constants (λ^I,S, μ^I,S), residual stress (τ₀^I,S), piezoelectric constants (e_31p^sk,e_32p^sk) and mass density (ρ^I,S) are considered for analysis of dimensionless natural frequency respect to viscous fluid velocity ū_f and pull-in voltage V̅_DC.