Study on Dynamic Characteristics of a Rotating Sandwich Porous Pre-Twist Blade with a Setting Angle Reinforced by Graphene Nanoplatelets

Lightweight blades with high strength are urgently needed in practical rotor engineering. Sandwich structures porous core and reinforced surfaces commonly applied to achieve these mechanical performances. Moreover, large aspect ratios established by the elastic plate models theory. This paper studies vibration of a rotating sandwich pre-twist setting angle graphene nanoplatelets (GPLs). Its is made foam metal, GPLs added into surface layers. Supposing that nanofillers perfectly connected matrix material, effective parameters layers calculated mixing law Halpin–Tsai model, while those determined open-cell scheme. The governing equation derived employing Hamilton principle. By comparing finite element method obtained ANSYS, present model analysis verified. material structural blade, including nanoplatelet (GPL) weight faction, GPL distribution pattern, porosity coefficient, length-to-thickness ratio, length-to-width discussed detail. finds provide important inspiration designing blade.