期刊
MULTISCALE MODELING & SIMULATION
卷 9, 期 2, 页码 513-544出版社
SIAM PUBLICATIONS
DOI: 10.1137/10079639X
关键词
homogenization; random media; defects
资金
- EADS IW
We present in this paper an approach for computing the homogenized behavior of a medium that is a small random perturbation of a periodic reference material. The random perturbation we consider is, in a sense made precise in our work, a rare event at the microscopic level. It, however, affects the macroscopic properties of the material, and we indeed provide a method to compute the first-and second-order corrections. To this end, we formally establish an asymptotic expansion of the macroscopic properties. Our perturbative approach shares common features with a defect-type theory of solid state physics. The computational efficiency of the approach is demonstrated.
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