Sound Generation by Metro Trains during Braking and Its Suppression Method
- Autores: Suchkov S.1, Yavchunovsky V.2, Timofeev A.2, Nikolaevtsev V.1, Suchkov D.1, Tretinnikov V.2
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Afiliações:
- Saratov State University, 410012, Saratov, Russia
- SPC Etna Plus, 410040, Saratov, Russia
- Edição: Volume 69, Nº 3 (2023)
- Páginas: 367-373
- Seção: АКУСТИЧЕСКАЯ ЭКОЛОГИЯ. ШУМЫ И ВИБРАЦИЯ
- URL: https://journals.rcsi.science/0320-7919/article/view/134446
- DOI: https://doi.org/10.31857/S0320791923600191
- EDN: https://elibrary.ru/QRSQLX
- ID: 134446
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Resumo
The causes of acoustic noise occurring during braking of electric vehicles, in particular, in the metro, were analyzed. The spectrum of such noise was measured, and it is shown that high-frequency discrete tones are excited by braking resistors, applied for electrodynamic braking of electric vehicles. Three proposed mechanisms of electromechanical interaction in a Fecral plate, which is a braking resistor element, were considered: the Ampère force and linear and nonlinear magnetostriction. It was shown that predominant odd harmonics indicate the presence of a significant piezomagnetic effect and the inverse effect of linear magnetostriction in the Fecral alloy. A phenomenological approach was used to calculate the piezomagnetic tensor elements for Fecral. Calculations by the finite element method showed that asymmetric cuts introduced into the plate may significantly decrease intensity of acoustic vibrations excited by the braking resistor.
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Sobre autores
S. Suchkov
Saratov State University, 410012, Saratov, Russia
Email: suchkov.s.g@mail.ru
Россия, 410012, Саратов, ул. Астраханская 83
V. Yavchunovsky
SPC Etna Plus, 410040, Saratov, Russia
Email: suchkov.s.g@mail.ru
Россия, 410040, Саратов, ул. Вишневая 11
A. Timofeev
SPC Etna Plus, 410040, Saratov, Russia
Email: suchkov.s.g@mail.ru
Россия, 410040, Саратов, ул. Вишневая 11
V. Nikolaevtsev
Saratov State University, 410012, Saratov, Russia
Email: nikolaevcev@ya.ru
Россия, 410012, Саратов, ул. Астраханская 83
D. Suchkov
Saratov State University, 410012, Saratov, Russia
Email: suchkov.s.g@mail.ru
Россия, 410012, Саратов, ул. Астраханская 83
V. Tretinnikov
SPC Etna Plus, 410040, Saratov, Russia
Autor responsável pela correspondência
Email: suchkov.s.g@mail.ru
Россия, 410040, Саратов, ул. Вишневая 11
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