Panel flutter analysis and optimization of composite tow steered plates

Guimarães, Thiago A.M. Guimarães; Castro, Saullo G.P.; Rade, Domingos A.; Cesnik, Carlos E.S. Cesnik

Panel flutter analysis and optimization of composite tow steered plates

Conference paper (2017)

Authors

Thiago A.M. Guimarães Guimarães Federal University of Uberlândia

Saullo G.P. Castro EMBRAER

Domingos A. Rade Division of Fundamental Science

Carlos E.S. Cesnik Cesnik University of Michigan

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Published Date

2017

Language

English

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Abstract

The utter behavior of tow steered composite panels, in which the fiber placement follow curvilinear trajectory, is evaluated. A simple structural model based on Ritz method combined with supersonic aerodynamic piston theory is used to analyze the aeroelastic behavior. Classical lamination plate theory and symmetric stacking sequence are used and the fiber trajectories are defined by Lagrange interpolation functions. The utter stability boundaries for optimal conventional (constant stiffness laminates) layups and non- conventional (variable stiffness laminates) steered panels are numerically compared. The effect of in-plane loads is also accounted for in the aeroelastic analyses.