Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mechanisms of fragmentation of Al-W granular composites under dynamic
  loading   Numerical simulations of Aluminum (Al) and Tungsten (W) granular composite
rings under various dynamic loading conditions caused by explosive loading were
examined. Three competing mechanisms of fragmentation were observed: a
continuum level mechanism generating large macrocracks described by the
Grady-Kipp fragmentation mechanism, a mesoscale mechanism generating voids and
microcracks near the initially unbonded Al/W interfaces due to tensile strains,
and a mesoscale jetting due to the development of large velocity gradients
between the W particles and adjacent Al. These mesoscale mechanisms can be used
to tailor the size of the fragments by selecting an appropriate initial
mesostructure for a given loading condition.

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The categories of this paper are: adap-org
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The categories of this paper are: acc-phys
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The categories of this paper are: cmp-lg
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The categories of this paper are: stat
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The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: dg-ga
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The categories of this paper are: q-fin
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The categories of this paper are: chem-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: plasm-ph