Date of Award

Summer 1991

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Mechanical & Aerospace Engineering

Program/Concentration

Engineering Mechanics

Committee Director

Chuh Mei

Committee Member

Gene Hou

Committee Member

Uday Shirahatti

Call Number for Print

Special Collections; LD4331.E57D35

Abstract

A finite element formulation is developed to analyze large-amplitude panel flutter of arbitrarily laminated composite plates subjected to a uniform temperature change. The plates considered are anisotropic composite, thin rectangular panels. The aerodynamic pressure load is modeled through the use of the first-order piston theory. The equations of motion for the oscillating plate are determined from the principle of virtual work. Two different solution procedures are given to determine the panel motions. The first procedure, which considers only the aerodynamic load, solves the panel limit-cycle motions by employing the linearized updated-mode with a nonlinear time function (LUM/NTF) approximation. The second procedure, which considers a combined thermal and aerodynamic load, separates the equations of motion into static and dynamic parts. The static part employs the Newton-Raphson iterative procedure in which the aerodynamic-thermal post-buckling problem is determined. The dynamic part employs the LUM/NTF approximation to solve the panel flutter behavior under the influence of temperature. Flutter and limit-cycle boundaries of graphite-epoxy and boron-epoxy composite plates are examined. Case examples include the effects of varying the number of layers and the boundary conditions of cross-ply laminates, and the effects of varying the lamination angles of three-layer angle-ply laminates. The flutter response of a composite plate with a uniform temperature distribution is also examined.

Rights

In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).

DOI

10.25776/x2wd-e723

Download

Share

COinS