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The influence of external factors on the elastic properties of 3-D unconsolidated granular mediumстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 11 апреля 2017 г.
- Авторы: Korobov A., Shirgina N., Kokshaiskiy A.
- Журнал: Proceedings of Meetings on Acoustics
- Том: 16
- Номер: 045017
- Год издания: 2012
- Первая страница: 1
- Последняя страница: 10
- DOI: 10.1121/1.4764491
- Аннотация: The nature of propagation of elastic waves in unconsolidated granular media is appreciably different from their propagation in continuous media. State of the contacts between grains has a significant influence on elastic properties of granular media. We present the results of investigations of the influence of external factors (for example the external variable pressure the amplitude of the probe signal) on the elastic properties of unconsolidated granular 3-D structure. We used steel balls with a diameter of 2 mm and 4 mm packed into a cell of the textolite as a model medium. Structure was attached by an external static force the magnitude of which can be varied. The dependence of the velocity of longitudinal waves on static external compression of the medium was measured. The dependence of the velocity of elastic waves on the amplitude of the probe signal for different values of the external static compression was investigated. The velocity of elastic waves with increasing amplitude decreased. As the external compression increased the dependence of the velocity of elastic waves on the amplitude of the signal weakened. We present a theoretical analysis of the experimental results.
- Добавил в систему: Ширгина Наталья Витальевна