WAVES IN RANDOM AND COMPLEX MEDIA, no.0, 2021 (SCI-Expanded)
Thermal wave propagation and efficiency analysis of thin axially symmetric
functionally graded annular fins with a fixed base boundary
condition are examined. All material properties are graded along the
radial direction using the Mori–Tanaka homogenization scheme to
design a realistic and physically meaningful graded material model
and create a smooth distribution of elastic and thermal material
properties. The novelty of this research is handling a more realistic
annular fin, which has sufficient strength in practice and significantly
reduces weight, using two different metal materials with the
elasticity-based Mori–Tanaka model. These conditions result in twopoint
linear boundary value problems that are numerically solved by
the pseudospectral Chebyshev method. The temperature distributions,
thermal stresses and the efficiency in the functionally graded
annular fin are compared with fins made of steel only and aluminium
only.