Effect of Two-dimensional Grading on the Thermomechanical Response of the Panel

Abstract

Some of the advantages of functionally graded materials (FGM) are related to their ability to provide a better thermal protection and reduce delamination tendencies present in layered composites. in particular, in ceramic-metal systems these goals can be achieved by increasing the concentration of ceramic particles in the region adjacent to the heated surface using a heterogeneous single layered structure. the unfortunate by-products of such design are asymmetry about the middle surface of the structure and bending-stretching coupling. as a result, displacements and stresses increase as compared to the symmetric counterpart, while the buckling loads and natural frequencies decrease. One of the possible solutions to the problem compensating for a reduced stiffness of FGM structures is based on the replacement of one-dimensional grading with a two-dimensional grading, including the regions with enhanced stiffness. the paper illustrates the formulation of the problem and peculiarities introduced in the solution by two-dimensional grading on the example of a large aspect ratio panel subject to thermomechanical loading. © 2008 American Institute of Physics.

Department(s)

Mechanical and Aerospace Engineering

Keywords and Phrases

Functionally graded materials; Multi-dimensional grading; Thermoelastic response

International Standard Book Number (ISBN)

978-073540492-2

International Standard Serial Number (ISSN)

1551-7616; 0094-243X

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 American Institute of Physics, All rights reserved.

Publication Date

13 Mar 2008

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