Out-of-plane dynamic instability of nonlocal shear deformable nanoplates made of polyvinylidene fluoride materials subjected to electromechanical forces

摘要: Nowadays, piezoelectric materials are used as smart nanostructures in many engineering applications. Polyvinylidene fluoride (PVDF) is one of the polymeric which has fascinated attention scientific community due to its remarkable properties. In present study, dynamic stability and parametric resonance a Mindlin PVDF nanoplate lying on an elastic medium under electromechanical loadings moving nanoparticle investigated. First, Hamilton's principle obtain partial equations governing transverse oscillations nanoplate. By utilizing theory nonlocal piezoelasticity, small-scale effects applied equations. Navier’s approach employed procure solution for simply supported Then, boundaries instability plane parameters obtained by applying energy-rate method time-varying ODEs. The results demonstrate that increase parameter reduction movement path decrease Also, made dynamically more stable than PZT-4 piezoceramic materials. Moreover, voltage can be control conditions nanostructures. this study have potential utilized accurate design nanoscale mass sensors nanoelectromechanical systems.