Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Yielding and microstructure in a 2D jammed material under shear
  deformation   The question of how a disordered material's microstructure translates into
macroscopic mechanical response is central to understanding and designing
materials like pastes, foams and metallic glasses. Here, we examine a 2D soft
jammed material under cyclic shear, imaging the structure of ~50,000 particles.
Below a certain strain amplitude, the structure becomes conserved at long
times, while above, it continually rearranges. We identify the boundary between
these regimes as a yield strain, defined without rheological measurement. Its
value is consistent with a simultaneous but independent measurement of yielding
by stress-controlled bulk rheometry. While there are virtually no irreversible
rearrangements in the steady state below yielding, we find a largely stable
population of plastic rearrangements that are reversed with each cycle. These
results point to a microscopic view of mechanical properties under cyclic
deformation.

18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys