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Numerical Heat Transfer, Part A: Applications
An International Journal of Computation and Methodology
Volume 54, 2008 - Issue 7
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Original Articles

Computational Design of Microstructural Composites with Tailored Thermal Conductivity

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Pages 686-708 | Received 19 Oct 2007, Accepted 02 Jul 2008, Published online: 12 Sep 2008
 

Abstract

This article presents a numerical procedure to design two-phase periodic microstructural composites with tailored thermal conductivities, which is generalized as a topology optimization problem. The objective function is formulated in a least-square of the difference between the target and effective conductivities. The effective values are derived from homogenization method with periodic boundaries; whereas, the target points locate in the Milton-Kohn bounds. The bound-based interpolation scheme and nonlinear diffusion technique are explored to regularize the original problem for attaining mesh-independent, edge-preserving, and checkerboard-free results. Various microstructures both in 2- and 3-dimensions are presented to demonstrate such a systematic procedure of conductive material design.

Financial support by the Australian Research Council (Project No. DP0558497) is greatly acknowledged.

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