Evolution of particle breakage and volumetric deformation of binary granular soils under impact load

Xiao, Yang; Liu, Hanlong; Chen, Qingsheng; Long, Leihang; Xiang, Junyi

doi:10.1007/s10035-017-0756-z

Cited by 72 publications

(13 citation statements)

References 51 publications

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“…Several experimental studies conducted on granular solids have revealed that high‐strain‐rate loading associated with high stresses significantly influences macroscopic stress‐strain response as well as the evolution of microstructure including the size distribution of constituent particles . To explore the impact of strain rate on the evolving PSD, two triaxial compression test simulations were carried out up to a mean stress of 4.5 GPa under 2.5 GPa confining pressure at axial strain rate

{\dot{ε}}_{a}

levels of 10 −4 s −1 (quasi‐static) and 10 4 s −1 (dynamic).…”

Section: Model Validationmentioning

confidence: 99%

A rate‐dependent constitutive model for brittle granular materials based on breakage mechanics

2019

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Modeling the rate‐dependent mechanical behavior of brittle granular materials is of interest to defense applications, civil and mining engineering, geology, and geophysics. In particular, granulated ceramics in armor systems play a significant role in the overall dynamic material response of ceramics, particularly in their penetration resistance. This paper presents a rate‐dependent constitutive model for brittle granular materials based on a recent reformulation of breakage mechanics theory. The rate‐dependency is introduced via the overstress theory of viscoplasticity. The proposed formulation incorporates the effects of relative density and particle grading on strength and porous compaction/dilation, and is capable of tracking their evolution. The model is devised with internal variables linked to underlying dissipative micromechanisms including configurational reorganization, particle breakage and frictional dissipation. A strategy for calibrating model parameters and required experiments are described. The impact of loading rate on shear strength and grading evolution are explored through a sensitivity analysis. The presented model is capable of capturing several key features of the experimentally observed behavior of brittle granular materials including stress‐, rate‐ and density‐dependent stress‐strain and volume change responses, the competition between dilation and breakage‐induced compaction, the evolving particle grading due to particle breakage, and the evolution toward a critical (steady) state under shearing. A possible application of this micromechanics‐inspired modeling framework involves integrating it into rate‐dependent models for ceramics to assist in improving the impact performance of next‐generation ceramics.

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{\dot{ε}}_{a}

levels of 10 −4 s −1 (quasi‐static) and 10 4 s −1 (dynamic).…”

Section: Model Validationmentioning

confidence: 99%

A rate‐dependent constitutive model for brittle granular materials based on breakage mechanics

2019

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“…The addition of fines to clean sand could change the uniformity coefficient of original sand (Xiao et al 2017a). Salgado et al (2000) pointed out that the fines content (f c ) could remarkably influence the stress-strain relationship, mobilized strength, dilatancy, and critical state strength, implying that the strength and deformation could be influenced by the uniformity coefficient.…”

Section: Effect Of Uniformity Coefficient On Strength and Dilatancymentioning

confidence: 99%

Discussion of “Influence of Particle Size and Gradation on the Stress-Dilatancy Behavior of Granular Materials during Drained Triaxial Compression” by Samaneh Amirpour Harehdasht, Mourad Karray, Mahmoud N. Hussien, and Mohamed Chekired

Xiao

Yuan

et al. 2018

Int. J. Geomech.

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The authors are commended for offering the significant and interesting work, which presented the effect of grain size and gradation on the stress-dilatancy behaviors of granular soils. The first conclusion of the original work was that the shearing strength and volumetric deformation were independent of the uniformity coefficient (i.e., the grading shape) at the given relative density and confining pressure. The second one was that the particle size could greatly influence the strength, volumetric deformation, and stress-dilatancy behaviors of granular soils. However, the first conclusion may not be universal for other granular soils according to the test data of sand (Li et al. 2015), sand-fines mixtures (Salgado et al. 2000; Xiao et al. 2017b, d), and simulation results of the discrete element method (DEM) (Yan and Dong 2011; Li et al. 2015). In addition, the effect of the particle shape (two different shapes in the original work) on the strength and stress-dilatancy relation at the phase-transformation state (where the dilatancy occurs) is different from that in the work by Guo and Su (2007). The detailed discussions are given in the following sections.

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“…Coarse granular aggregates, e.g., rockfill and ballast, have been widely used in constructing public facilities, due to its high mechanical qualities [1][2][3][4]. However, it has been long found that when subjected to external loads, particle breakage would occur in coarse aggregates, which significantly influenced the strength and deformation behaviour of the material [5][6][7][8][9]. For example, reduced volumetric dilatancy usually took place with increasing particle breakage [7].…”

Section: Introductionmentioning

confidence: 99%

“…However, it has been long found that when subjected to external loads, particle breakage would occur in coarse aggregates, which significantly influenced the strength and deformation behaviour of the material [5][6][7][8][9]. For example, reduced volumetric dilatancy usually took place with increasing particle breakage [7].…”

Section: Introductionmentioning

confidence: 99%

Fractional Plasticity Model for Coarse Aggregates Incorporating Particle Breakage under Triaxial Loading

Yang

Sun

2021

Advances in Civil Engineering

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Fractional plasticity has been originally proposed for capturing the state-dependent nonassociated behaviour of sand, with no use of state variables and additional plastic potentials. However, for coarse aggregates, significant particle breakage would occur, which could influence the stress-strain behaviour of the material, by shifting the critical state line in the e − ln p ′ plane. In this note, an extension of the fractional plasticity for constitutive modelling of coarse aggregates is made by incorporating particle breakage under triaxial loading. The developed model is validated by simulating a series of laboratory test results of different coarse aggregates under triaxial loading, where a good agreement between the model simulations and test results is observed.

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Evolution of particle breakage and volumetric deformation of binary granular soils under impact load

Cited by 72 publications

References 51 publications

A rate‐dependent constitutive model for brittle granular materials based on breakage mechanics

A rate‐dependent constitutive model for brittle granular materials based on breakage mechanics

Discussion of “Influence of Particle Size and Gradation on the Stress-Dilatancy Behavior of Granular Materials during Drained Triaxial Compression” by Samaneh Amirpour Harehdasht, Mourad Karray, Mahmoud N. Hussien, and Mohamed Chekired

Fractional Plasticity Model for Coarse Aggregates Incorporating Particle Breakage under Triaxial Loading

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