 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 13217 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8152
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| In English (Mech. Solids): | | 5065 |
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| Thanh-Hai Nguyen, Thanh-Vu Ngo, and Thanh-Trung Vo, "Combined Inter-Particle and Wall-Particle Friction Coefficient Effects on Collapse Mobility and Deposition Morphology of a Granular Column Composed of Pentagonal Grains," Mech. Solids. 60 (3), 2018-2032 (2025) |
| Year |
2025 |
Volume |
60 |
Number |
3 |
Pages |
2018-2032 |
| DOI |
10.1134/S0025654425600618 |
| Title |
Combined Inter-Particle and Wall-Particle Friction Coefficient Effects on Collapse Mobility and Deposition Morphology of a Granular Column Composed of Pentagonal Grains |
| Author(s) |
Thanh-Hai Nguyen (Faculty of Water Resources Engineering, The University of Danang – University of Science and Technology, Danang, 550000 Vietnam, nthai@dut.udn.vn)
Thanh-Vu Ngo (Faculty of Water Resources Engineering, The University of Danang – University of Science and Technology, Danang, 550000 Vietnam)
Thanh-Trung Vo (School of Transportation Engineering, Danang Architecture University, Danang, 550000 Vietnam;Office of Research Administration, Danang Architecture University, Danang, 550000 Vietnam) |
| Abstract |
Frictional gravity-driven granular flows are ubiquitous scenarios in natural hazardous
events such as landslides, rock avalanches, and snow avalanches. Understanding the physical behavior
of the natural hazards above may play an important role in mitigating and controlling their potential
impacts. The boundary-particle and inter-particle friction coefficient may strongly govern the mobility and runout distance of such flows. In this paper, we numerically explore these frictional effects on
the kinetic energy and deposition morphology of a pentagonal granular column collapses on a horizontal plane utilizing discrete element simulations. The results showed that small values of both wall-particle and inter-particle friction coefficients significantly affect the mobility and deposition of gran-
ular materials. In contrast, these physical behaviors are nearly insensitive with large values of both friction coefficients. Interestingly, by proposing a dimensionless parameter under inversely linear combining the wall-particle friction and inter-particle friction coefficient, both kinetic energy and depo-
sition morphology are nontrivially controlled but with different values of the weighting factor of the
inter-particle friction coefficient. This interesting finding confirms the different contributions of wall-particle and inter-particle friction coefficients and may originate from the contact forces network,
characterized by the probability density functions of normal contact forces in the collapsing and spreading stages. These observations may significantly provide a better understanding of the behavior
of frictional hazardous flows, leading to the development of effective strategies for risk reduction. |
| Keywords |
Column collapse, Discrete element method, Deposition morphology, Friction coefficients, Particle shape, Runout distance |
| Received |
08 February 2025 | Revised |
23 April 2025 | Accepted |
23 April 2025 |
| Link to Fulltext |
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