Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mechanical systems with hyperbolic chaotic attractors based on Froude
  pendulums   We discuss two mechanical systems with hyperbolic chaotic attractors of Smale
- Williams type. Both models are based on Froude pendulums. The first system is
composed of two coupled Froude pendulums with alternating periodic braking. The
second system is Froude pendulum with time-delayed feedback and periodic
braking. We demonstrate by means of numerical simulations that proposed models
have chaotic attractors of Smale - Williams type. We specify regions of
parameter values at which the dynamics corresponds to Smale - Williams
solenoid. We check numerically hyperbolicity of the attractors.

28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex