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Effect of Geometry on Flexural Wave Propagation in a Notched Barстатья
- Авторы: Agafonov A.A., Izosimova M.Yu, Zhostkov R.A., Kokshayskiy A.I., Korobov A.I., Odina N.I.
- Журнал: Acoustical Physics
- Том: 70
- Номер: 4
- Год издания: 2024
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 593
- Последняя страница: 601
- Оригинальные версии: Влияние геометрии на распространение изгибной волны в разрезных стержнях
- Переводные версии: Особенности распространения изгибной волны в разрезном стержне
- DOI: 10.1134/s1063771024602000
- Аннотация: The propagation of flexural elastic waves in notched metal bars with a rectangular cross section with the depth of notches increasing by a power law has been studied by numerical modeling and experimental laser scanning vibrometry. Three types of notch arrangement have been considered: uniform and more frequent and sparse towards the end of a bar. Such structures exhibit the characteristics of an acoustic black hole. For all the studied samples, in the 10–100 kHz frequency range, an increase in amplitude and decrease in length of the flexural wave have been experimentally found as a wave approaches the end of a bar. It has been shown that there is a critical frequency, above which the modes exhibit a section with highly reduced amplitude of oscillations.
- Добавил в систему: Изосимова Мария Юрьевна