Electronic Journal Technical Acoustics ISSN 1819-2408

Nora Vilchinska

Force chains in granular media and ultrasound impulse propagation in sand specimen under load

language: English

received 06.08.2007, published 29.10.2007

Download article (PDF, 170 kb, ZIP), use browser command "Save Target As..."
To read this document you need Adobe Acrobat © Reader software, which is simple to use and available at no cost. Use version 4.0 or higher. You can download software from Adobe site (http://www.adobe.com/).

ABSTRACT

An analysis of the pattern of stress chains in dense and loose sand and velocity of ultrasound impulse propagation in quartz sand under loading explains the mechanisms by which granular materials, such as loose and dense sand, respond to external loads. Experiments were carried out in pure marine quartz sand under load in a triaxial test camera.

Keywords: Granular media, dilatancy, nonlinear acoustics, ultrasound propagation.

5 pages, 3 figures

Сitation: Nora Vilchinska. Force chains in granular media and ultrasound impulse propagation in sand specimen under load. Electronic Journal “Technical Acoustics”, http://www.ejta.org, 2007, 20.

REFERENCES

1. Astrom J. A., Herrmann H. J., Timonen J. Granular packing and Fault Zones. Physical Review Letters, 2000, vol. 84, N°4, 638–641.
2. Jaeger H. M., Nagel S., R. P. Behringer. The physics of granular media. Physics Today, 1996, 49, 32–38.
3. Daniels K. E., Coppock J. E, Behringer R. P. Dynamics of meteor impacts. Chaos: An interdisciplinary. Journal of nonlinear Science, 2004, December, vol. 14, issue 4, p. S4.
4. Paul A. Johnson, Xiaoping Jia. Nonlinear dynamics, granular media and dynamic earthquake triggering. Nature, 2005, vol. 437, pp. 371–374.
5. Reynolds O. The dilating of media composed of rigid particles in contact. Phil. Magazine, 1885, vol. 20, N°127, 469–481.
6. Nikolaevskiy Victor N. Geomechanics and Fluidodynamics, Kluwer, 1996.
7. Vilchinska N. A., Kulvinova J. B., Shehter E. J. Triaxial test with acoustic control. Academy of Sciences USSR, Engineering Geology, 1984, N°2, Moscow, 110–113.
8. Vilchinska N., Shehter E., Kozinda N. Patent, priority 30.05.1990 SU 1728801 – The laboratory method of soil testing.
9. Vilchinska Nora. Impulse induced wave propagation in quartz marine sands. Forum Acusticum, Budapest, 2005, 29 Aug. – 2 Sept., 1409–1414.

Nora Vilchinska graduated from the Faculty of Physics at the Moscow State University in 1968. 23 years experience in geomechanic and geodynamic (laboratory and field research) in Soil laboratory, Institute of Marine Geology (Riga, Latvia). At present she participates in European Cooperation in field of Scientific and Technical Research - COST 534 “New Materials and Systems for Prestressed Concrete Structures”. Scientific interests: nonlinear acoustic and nonlinear nondestructive technique (NNDT), methods for inspection and monitoring. e-mail: vilcinska(at)hotmail.com