Assessment of K0 correlation to strength for granular materials

Lee, Jun-Hwan; Yun, Tae Sup; Lee, Dongyeol; Lee, Junghwoon

doi:10.1016/j.sandf.2013.06.009

Cited by 51 publications

(19 citation statements)

References 19 publications

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“…K 0 experiments conducted by Chu & Gan (2004) and Wanatowski & Chu (2007) found relatively high K 0 values and a marked sensitivity of the K 0 response to the initial void ratio (e 0 ) for loose sand samples; for denser sands the K 0 values were lower and less sensitive to variations in packing density. Similar observations were reported by Okochi & Tatsuoka (1984), Mesri & Vardhanabhuti (2007), Northcutt & Wijewickreme (2013) and Lee et al (2013). In contrast, Talesnick (2012) reported higher K 0 values for dense states than for loose ones.…”

Section: Introductionsupporting

confidence: 87%

“…Lee et al (2013) measured higher values of K 0 for non-etched glass beads than for etched glass beads.…”

Section: Introductionmentioning

confidence: 82%

“…Prior authors have attributed the K 0 dependency on void ratio to the different internal fabrics formed during sample preparation (Wanatowski & Chu, 2007;Lee et al, 2013). However, these relationships are hypothetical as the material fabric cannot be directly quantified in conventional laboratory tests.…”

Section: Micro Scale Analysismentioning

confidence: 99%

“…Changes in particle shape and hence in the connectivity of particles affect the fabric of granular materials which is closely related to the K 0 values (Guo & Stolle, 2006;Northcutt & Wijewickreme, 2013). Lee et al (2013) attributed the low values obtained for K 0 of dense materials to the development of strong force chains in the vertical direction, leading to less stress transmission in the horizontal direction. However, Talesnick (2012) attributed the high K 0 values for dense materials to the dilatant nature of dense soils: it is difficult to accept this explanation as dilation is suppressed during onedimensional compression.…”

Section: Introductionmentioning

confidence: 95%

“…This definition implies that there is a unique K 0 value for a given soil type and that K 0 is independent of initial state (i.e., packing density and stress level). The angle of shearing resistance at the peak stress (' p ) is sometimes used in equation (1) (Mesri & Vardhanabhuti, 2007;Talesnick, 2012;Lee et al, 2013). ' p depends on the material state (Been & Jefferies, 1985); thus if ' p is used in Equation (1), at a given stress level K 0 will increase with increasing void ratio.…”

Section: Introductionmentioning

confidence: 99%

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Numerical study of one-dimensional compression in granular materials

O'Sullivan¹

2015

Géotechnique Letters

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The Discrete Element Method (DEM) has been employed to simulate vertical one-dimensional compression of an idealized soil. Direct measurement of the full stress tensor was possible and the results show that K 0 (the ratio of horizontal to vertical effective stresses) increases with void ratio, which is consistent with previous experimental studies. The anisotropic fabric induced during compression was quantified by considering the orientations and magnitudes of the normal contact forces. For the denser samples there was a definite bias towards more vertically-oriented contacts, resulting in lower stresses being transmitted in the horizontal direction for a given vertical stress. In contrast, the contacts were oriented more isotropically in the looser samples, allowing more similar stresses to be transmitted in the horizontal and vertical directions.

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Section: Introductionsupporting

confidence: 87%

“…Lee et al (2013) measured higher values of K 0 for non-etched glass beads than for etched glass beads.…”

Section: Introductionmentioning

confidence: 82%

Section: Micro Scale Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Numerical study of one-dimensional compression in granular materials

O'Sullivan¹

2015

Géotechnique Letters

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References

2018

Granular Geomaterials Dissipative Mechanics

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Elasticity and Mechanical Behaviour of Granular Materials: Some Insights from Numerical Studies of Simple Systems

Roux

Khalili

Froiio

et al. 2020

Advances in Mechanics and Mathematics

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We briefly review the elastic properties of granular materials, as explored in numerical studies of simple model materials by the "discrete element method " (DEM) . Elastic or quasielastic responses are obtained as stable contact networks are probed with negligible friction effects. Elastic moduli, at the macroscopic scale, or contact stiffnesses at the contact network scale, have very limited influence on macroscopic constitutive laws ruling quasistatic deformation and inertial flow. The elastic moduli nevertheless provide useful indirect information on internal variables such as coordination and fabric. Singularities in the tensor of elastic moduli are related to the proximity of failure in the microscopic sense (contact network) but not in the macroscopic sense (yield condition). Elastic properties are also useful in the characterization of the directional dependence of incremental stress-strain response, a key ingredient in the identification of instabilities causing localization phenomena.

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Assessment of K0 correlation to strength for granular materials

Cited by 51 publications

References 19 publications

Numerical study of one-dimensional compression in granular materials

Numerical study of one-dimensional compression in granular materials

References

Elasticity and Mechanical Behaviour of Granular Materials: Some Insights from Numerical Studies of Simple Systems

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