Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Machine learning reveals strain-rate-dependent predictability of
  discrete dislocation plasticity   Predicting the behaviour of complex systems is one of the main goals of
science. An important example is plastic deformation of micron-scale crystals,
a process mediated by collective dynamics of dislocations, manifested as
broadly distributed strain bursts and significant sample-to-sample variations
in the response to applied loading. Here, by combining large-scale discrete
dislocation dynamics simulations and machine learning, we study the problem of
predicting the fluctuating stress-strain curves of individual small single
crystals subject to strain-controlled loading using features of the initial
dislocation configurations as input. Our results reveal an intriguing rate
dependence of deformation predictability: For small strains predictability
improves with increasing strain rate, while for larger strains the
predictability vs strain rate relation becomes non-monotonic. We show that for
small strains the rate-dependence of deformation predictability can be captured
by considering the fraction of dislocations moving against the direction
imposed by the external stress, serving as a measure of strain-rate-dependent
complexity of the dislocation dynamics. The non-monotonic predictability vs
strain rate relation for large strains is argued to be related to a transition
from fluctuating to smooth plastic flow when strain rate is increased.

31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin