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24389

RANDOM RESPONSE OF SHAPE MEMORY ALLOY HYBRID COMPOSITE PLATES SUBJECT TO WHITE-GAUSSIAN NOISE AND THERMAL ENVIRONMENT

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Last updated: 04 Jan 2025

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Abstract

The random response and thermal buckling of a traditional composite plate impregnated with pre-strained shape memory alloy (SMA) fibers subjected to combined thermal and acoustic loads are investigated using a finite element model based on the first order shear deformable plate theory and von Karman strain-displacement relations to account for moderately large deflection. The thermal load is assumed to be steady state constant temperature distribution, and the acoustic excitation is considered to be a stationary Gaussian pressure with zero mean and uniform magnitude over the plate surface. The governing nonlinear equations are obtained using the principal of virtual work adopting an approach based on the thermal strain being an integral quantity of the thermal expansion coefficient with respect to temperature to account for temperature dependent material properties. The static nonlinear equations are solved by Newton-Raphson numerical technique to get the thermal post-buckling deflection. The dynamic nonlinear equations of motion are transferred to modal coordinates to reduce the computational efforts. The Newmark implicit integration scheme is employed to solve the second order ordinary differential equations of motion. Finally, the buckling temperature, post-buckling deflection and the random response of a SMA hybrid composite plate panel are presented, illustrating the effect of SMA volume fraction, pre-strain, sound pressure level and temperature rise on the panel response.

DOI

10.21608/asat.2007.24389

Keywords

shape memory alloy, Nonlinear Random Response, Thermal buckling

Authors

First Name

Ibrahim

Last Name

H.

MiddleName

H.

Affiliation

Research Assistant, Noon for Research and Development, noonrd.org & National Authority for Remote Sensing and Space Sciences, Cairo, Egypt.

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First Name

Tawfik

Last Name

M.

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Affiliation

Assistant Professor, Modeling and Simulation in Mechanics Department, German University in Cairo, Egypt.

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First Name

Negm

Last Name

M

MiddleName

H.

Affiliation

Professor, Aerospace Engineering Department, Faculty of Engineering, Cairo University, Egypt.

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Volume

12

Article Issue

ASAT Conference, 29-31 May 2007

Related Issue

4431

Issue Date

2007-05-01

Receive Date

2019-01-14

Publish Date

2007-05-01

Page Start

1

Page End

20

Print ISSN

2090-0678

Online ISSN

2636-364X

Link

https://asat.journals.ekb.eg/article_24389.html

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https://asat.journals.ekb.eg/service?article_code=24389

Order

128

Type

Original Article

Type Code

737

Publication Type

Journal

Publication Title

International Conference on Aerospace Sciences and Aviation Technology

Publication Link

https://asat.journals.ekb.eg/

MainTitle

RANDOM RESPONSE OF SHAPE MEMORY ALLOY HYBRID COMPOSITE PLATES SUBJECT TO WHITE-GAUSSIAN NOISE AND THERMAL ENVIRONMENT

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Article

Created At

22 Jan 2023