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128541

Nonlinear Panel Flutter Analysis at High Supersonic Speed.

Article

Last updated: 04 Jan 2025

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Tags

Mechanical Power Engineering

Abstract

Exterior panels forming the exterior skin of flight vehicles traveling through the atmosphere at high supersonic speeds are often susceptible to the occurrence of limit-cycle type self-excited vibrations called flutter. Panel flutter is resulting from the dynamic instability of the aerodynamic, inertia, and elastic forces of the system. The equations of motion for panel flutter are derived using Von Karman's large deflection plate theory and quasi-steady aerodynamic theory. The equations are given in terms of the displacement and are presented in non-dimensional form. Galerkins method is used to transform the system of nonlinear partial differential equations into a system of nonlinear ordinary differential equations in time variables. The obtained equations are then solved by the method of harmonic balance and Newton-Raplison algorithm. The results are compared with both theoretical and experimental results given in publications. 
Then, a parametric study is performed to study the effects of aerodynamic loading, aerodynamic damping, structural damping, in-plane applied loads, thermal stresses and cavity pressure. 

DOI

10.21608/bfemu.2020.128541

Keywords

Panel Flutter, Aerodynamic Loading, Aerodynamic Damping, Structural Damping, Cavity Effect, thermal effect, Von Karman's Large Deflection Plate Theory, Quasi-Steady Aerodynamic Theory, Galerkis Method, Newton-Raphson Algorithm, Harmonic Balance Method

Authors

First Name

S.

Last Name

Abou-Amer

MiddleName

A.

Affiliation

Vice Dean of AHI for management & Informatics

Email

-

City

-

Orcid

-

First Name

A.

Last Name

Dahshan

MiddleName

M.

Affiliation

Hairman of AHI for management & Informatics

Email

-

City

-

Orcid

-

First Name

M.

Last Name

El Nomrossy

MiddleName

-

Affiliation

Chairman of Aerospace Research Center, AO1. Senior Member of AIAA

Email

-

City

-

Orcid

-

Volume

32

Article Issue

2

Related Issue

19076

Issue Date

2007-06-01

Receive Date

2007-03-11

Publish Date

2020-12-08

Page Start

21

Page End

36

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 32_Issue 2_Pages 21-36.pdf

PDF . 1.2MB

Link

https://bfemu.journals.ekb.eg/article_128541.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=128541

Order

17

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

Nonlinear Panel Flutter Analysis at High Supersonic Speed.

Details

Type

Article

Created At

22 Jan 2023