Effect of Two-Dimensional Grading on the Thermomechanical Response of the Panel
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
R. Chona et al., "Effect of Two-Dimensional Grading on the Thermomechanical Response of the Panel," Multiscale and Functionally Graded Materials 2006, American Institute of Physics (AIP), Feb 2008.
Mechanical and Aerospace Engineering
Keywords and Phrases
Functionally Graded Materials; Heat Conduction; Materials Properties
Article - Conference proceedings
© 2008 American Institute of Physics (AIP), All rights reserved.