Vibration and Flutter of a Honeycomb Sandwich Plate with Zero Poisson’s Ratio

A honeycomb is a kind of excellent lightweight structure and sandwich plate with zero Poisson’s ratio (ZPR) core used widely in morphing structures. In this paper, composed analyzed for free vibrations flutter under supersonic airflows. The equivalent elastic parametric formulas the are proposed. models compared their natural frequencies by theoretical finite element methods respectively, which verifies validity model ratio. influence geometric parameters on vibration obtained. Three kinds cores, namely, regular hexagon, auxetic hybrid ratio, through plate. It found that frequency second one when other same. using first order piston theory flows. critical velocity obtained, velocities