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Periodic regimes of motion of capsule system on rough plane

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Abstract

The motion of a capsule system along a line on a rough horizontal plane is considered. The capsule consists of a hull and an internal mass moving periodically inside the hull parallel to the line of the motion of the system. The velocity of the internal mass relative to the hull is supposed to be a continuous function of time. Periodic regimes of motion of the system are considered. A periodic regime of motion is the motion of the system in which the periodic change in the position of the internal mass relative to the hull provides the periodicity of the velocity of the hull. In such a motion, the system travels the same distance over each time period. We prove, that the periodic regime of motion of the capsule system exists, is unique, and is stable with respect to the initial conditions. The velocity of the hull for any initial condition converges to the periodic velocity of the hull exponentially or in finite time. The criterion is found that defines whether the convergence is exponential or in finite time. Examples illustrating both types of the convergence are given.

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Acknowledgements

We appreciate Prof. Bolotnik N.N. for reading the manuscript and useful comments.

Funding

This study was supported by Russian Science Foundation, Project No. 18-11-00307, https://rscf.ru/en/project/18-11-00307/.

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Correspondence to Dmitri Knyazkov.

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Figurina, T., Knyazkov, D. Periodic regimes of motion of capsule system on rough plane. Meccanica 58, 493–507 (2023). https://doi.org/10.1007/s11012-022-01572-y

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