Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Discrete Element Method model for frictional fibers   We present a Discrete Element Method algorithm for the simulation of elastic
fibers in frictional contacts. The fibers are modeled as chains of cylindrical
segments connected to each other by springs taking into account elongation,
bending and torsion forces. The frictional contacts between the cylinders are
modeled using a Cundall and Strack model routinely used in granular material
simulations. The physical scales for simulations, the determination and the
tracking of contacts, and the algorithm are discussed. Tests on different
situations involving few or many contact points are presented and compared to
experiments or to theoretical predictions.

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The categories of this paper are: gr-qc
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
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The categories of this paper are: math
26
The categories of this paper are: bayes-an
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The categories of this paper are: acc-phys
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The categories of this paper are: eess
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
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The categories of this paper are: quant-ph
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-ph
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The categories of this paper are: alg-geom
18
The categories of this paper are: econ