Support of modified Archimedes' law theory in granular media

Feng, Yajie; Blumenfeld, Raphaël; Liu, Caishan

doi:10.1039/c8sm02480d

Cited by 35 publications

(49 citation statements)

References 49 publications

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“…In a set of separate experiments using a rectangular plate intruder and PIV (Figure 8E) we observed the flow zone development appears similar to continuum results (Figure 8F). These trends also agree with general observations from a 3D DEM study done by Feng et al 65 . The Aguilar and Goldman 58 study presents a model whereby the rigid cone emerges from a growing rigid frustum of constant base angle that gets progressively longer until converging to the final cone shape (Figure 8B).…”

Section: Developement Of a Shear Deformation Zone In Plate Intrusionssupporting

confidence: 92%

Efficacy of simple continuum models for diverse granular intrusions

et al. 2021

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Section: Developement Of a Shear Deformation Zone In Plate Intrusionssupporting

confidence: 92%

Efficacy of simple continuum models for diverse granular intrusions

et al. 2021

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“…17c, h) resemble the outlines (arcs a-d and a-e) of the failure surfaces introduced in the theory of Meyerhof [24], as indicated in Fig. 18 [12], and Aguilar et al [30]. In plastic failure theories [22][23][24][25], it is assumed that an elastic wedge zone in front of the plate behaves as part of the plate.…”

Section: Granular Flowsmentioning

confidence: 95%

“…Moreover, because the theories were constructed under static equilibrium conditions, the wedge zone dynamics during the penetration process have not been considered at all. Kang et al [7] and Feng et al [12] have proposed a model considering the dynamics of the wedge zone. Feng et al explained that the initial rapid increase of resistance was caused by an initial compression of the material immediately ahead of the intruder.…”

Section: Granular Flowsmentioning

confidence: 99%

“…The resistance force acting on intruders during penetration into granular materials is of interest not only in granular physics [1][2][3][4][5][6][7][8][9][10][11][12], but also in engineering applications, such as cone penetration tests [13][14][15][16][17][18][19][20][21], pile installations [22][23][24][25][26][27][28], the digging of mining machineries [29], and the locomotion of legged robots over rough terrain [30]. Previous studies have demonstrated that the penetration resistance is affected by the particle size [12,14,16,17,20,21,31], bulk packing fraction [2,9,12,17,19,21,25], penetration depth [3,4,7,…”

Section: Introductionmentioning

confidence: 99%

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Influence of particle size on vertical plate penetration into dense cohesionless granular materials (large-scale DEM simulation using real particle size)

et al. 2019

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The influence of the particle size on the vertical plate penetration into dense cohesionless granular materials was numerically investigated. Simulations were performed in quasi-two-dimensional conditions by changing the mean particle diameters d 50 but maintaining the plate thickness B from B/d 50 = 63-2.6. The initial bulk packing fraction was kept high, irrespective of the particle size. In the smallest particle size case (B/d 50 = 63), the size ratio reached almost the same level as that in the laboratory experiments using natural sand particles. The results demonstrated that the mean penetration resistance force acting on the plate tip surface increases with a decrease of B/d 50 , while the tangential force acting on the side surfaces does not change with B/d 50 . Tip resistances increase linearly with the penetration depth, while the tangential resistances increase with the square of the depth regardless of B/d 50 . The behavior of the resistance fluctuations changes qualitatively between B/d 50 = 31 and 21. For all cases, we confirmed the formation of a wedge-shaped flow with a high forward velocity in front of the plate tip. The wedge flow width was larger than the plate thickness by almost a mean particle diameter, and was responsible for the increase in the mean resistance depending on the particle size. For the large B/d 50 cases only, the resistance exhibited quasiperiodic fluctuations, which was attributable to the intermittent nucleation and disappearance of the shear bands. Moreover, we investigated the dependence of B/d 50 on the band evolutions by analyzing the band thickness.

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“…They also defined the target materials and thicknesses of the target (h) as thin (h/D < 1), intermediate (1 < h/D < 10), and semi-infinite (h/D > 10) [13]. The mechanisms of penetration resistance are dependent on interactive characteristics of impacting objects and target media such as particle size of soil media [24], bulk packing fraction [25], penetration depth [17], intruder shape [2], and penetration velocity [26]. An enormous number of studies on projectile penetration area have been published in last 50 years dealing with different process parameters such as different target materials, various geometry and velocity of impacting objects, and different investigation procedures.…”

Section: Projectile Penetration Process Parametersmentioning

confidence: 99%

Advances in Projectile Penetration Mechanism in Soil Media

et al. 2020

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The penetration to geological shield occurs in many situations at various velocities and scales, for example, meteor-cratering, pile driving, falling of objects from high-rise building construction, and debris/fragments from failed components. The soil media is an efficient energy dissipation system and effective shock protection shield. Impact circumstances are currently getting widespread attention. A lot of research has been done on soil media for impact and penetration. The phenomenon of dynamic penetration in heterogeneous particulate soil medium is very complex and the target soil media under dynamic impact especially under high speed and deep penetration neither behave completely as solid nor as liquid. The topics of recent research interest in the field of penetration to soil media and their significant findings are critically reviewed in the present study. The dedicated review of analytical, empirical, experimental, and computational methods to predict the response of soils media-impacting objects to penetration is presented. The emerging challenges in fundamental research of penetration into soil media are outlined and it is an attempt to formulate the future research directions in the field of soil media penetration.

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Support of modified Archimedes' law theory in granular media

Abstract: We study the resistance force of cylindrical objects penetrating quasi-statically into granular media experimentally and numerically.

Cited by 35 publications

References 49 publications

Efficacy of simple continuum models for diverse granular intrusions

Efficacy of simple continuum models for diverse granular intrusions

Influence of particle size on vertical plate penetration into dense cohesionless granular materials (large-scale DEM simulation using real particle size)

Advances in Projectile Penetration Mechanism in Soil Media

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