Aeroelastic dynamics stability of rotating sandwich annular plate with viscoelastic core layer

doi:10.1007/s10483-016-2012-9

Abstract

Abstract:

A dynamic model for a rotating sandwich annular plate with a viscoelastic core layer is developed. All fundamental equations and boundary conditions are established based on Hamilton's principle, and the rotation effect and viscoelastic properties of the sandwich structure are taken into account. The aerodynamics force acting on the plate is described by a rotating damping model, and the constitutive behavior of the viscoelastic core layer is formulated by the frequency-dependent complex modulus. The effects of geometrical and material parameters on frequencies and damping of forward and backward traveling waves and the dynamic stability for the rotating sandwich plate are numerically analyzed by means of Galerkin's method. The results show that the critical and flutter speeds of the rotating plate can be increased at some certain parameters of the viscoelastic core layer.

Key words: buckling, critical speed, vibration, numerical analysis, laminate, flutter speed

2010 MSC Number:

74H45

Xingzhe WANG, Longfei LI, Youhe ZHOU. Aeroelastic dynamics stability of rotating sandwich annular plate with viscoelastic core layer. Applied Mathematics and Mechanics (English Edition), 2016, 37(1): 107-120.

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