Flutter phenomenon of a pressurized functionally graded cylindrical shell in aerodynamic supersonic flow based on the Flugge's theory

Authors

Abstract

Prediction of the flutter phenomenon of a functionally graded cylindrical shell with simply supported end conditions under aerodynamic and thermal loadings with considering the internal pressure of the shell is investigated. The volume fraction of constituent materials follows a simple power law in the thickness direction. The aerodynamic load is defined by linearized first-order potential (piston) theory incorporating a correction term. The strain-displacement relations and the equations of motion are written in accordance with Flugge's shell theory in which initial stresses are taken from solution of equilibrium equations. The Galerkin method is used for solving the equations of motion. The effects of volume fraction distributions, temperaure and pressure variations on the flutter boundary and time response of the system are fully discussed.

Keywords


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