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On Hashin-Shtrikman bounds for mixtures of two isotropic materials (CROSBI ID 150674)

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Vrdoljak, Marko On Hashin-Shtrikman bounds for mixtures of two isotropic materials // Nonlinear analysis: real world applications, 11 (2010), 6; 4597-4606. doi: 10.1016/j.nonrwa.2008.12.002

Podaci o odgovornosti

Vrdoljak, Marko

engleski

On Hashin-Shtrikman bounds for mixtures of two isotropic materials

In the context of stationary diffusion equation we calculate explicitly the optimal microstructure for the Hashin-Shtrikman energy bound in the case of two isotropic phases with prescribed ratio, in three dimensions. A similar, but more general problem arises in the study of optimal design in conductivity with multiple state equations. Here, the necessary condition of optimality leads to a finite dimensional optimisation problem which extends the problem of Hashin-Shtrikman bounds, which can be solved explicitly, as well. These calculations have important application to the optimality criteria method for numerical solution of optimal design problems with multiple state equations. In this iterative algorithm, the presented results enable one to calculate explicitly the update of design variables, similar to the problems with one state equation. Therefore, its implementation is simple, showing nice convergence results on a number of examples, two of them being demonstrated here.

Hashin-Shtrikman bounds; stationary diffusion equation; multiple state optimal design; optimality criteria method

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Podaci o izdanju

11 (6)

2010.

4597-4606

objavljeno

1468-1218

10.1016/j.nonrwa.2008.12.002

Povezanost rada

Matematika

Poveznice
Indeksiranost