Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Asymptotic behaviour of viscoelastic composites with almost periodic
  microstructures   In this paper we study the acoustic properties of porous media saturated by
an incompressible viscoelastic fluid. The model considered here consists of a
linear deformable porous skeleton having memory that is surrounded by a
viscoelastic Oldroyd fluid. Assuming the microstructures to be almost
periodically distributed and under the almost periodicity hypothesis on the
coefficients of the governing equations, we determine the macroscopic
equivalent medium. To achieve our goal, we use some very recent tools about the
sigma convergence of convolution sequences.

4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
1
The categories of this paper are: cs
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
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The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
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The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th