Asymptotic Analysis for Domains Separated by a Thin Layer Made of Periodic Vertical Beams

• DOI: 10.1007/s10659-017-9628-3
• Publication Date: 2017-03-01T09:09:34Z
• Authors: Georges Griso; Anastasia Migunova; Julia Orlik
• Keywords: junctions; decomposition of beam displacements; 2010 MSC: 74B05, 74K10, 74K30, 74Q05, 74A50, 35B27; homogenization; linear elasticity; interface; 0101 mathematics; 01 natural sciences; [MATH.MATH-NA]Mathematics [math]/Numerical Analysis [math.NA]

We consider a thin heterogeneous layer consisting of thin beams (of radius $r$ ) and study the limit behavior of this problem as the period $\varepsilon $ , the thickness $\delta$ and the radius $r$ of the beams tend to zero. The decomposition of the displacement field into beams developed by Griso (J. Math. Pures Appl. 89:199–223, 2008) is used, which allows to obtain a priori estimates. Two types of unfolding operators are introduced to deal with different parts of the decomposition. In conclusion, we obtain the limit problem together with transmission conditions across the interface.