Simulation of Soil Behavior under Blast Loading

An, Jie Jing; Tuan, Christopher Y.; Cheeseman, B. A.; Gazonas, George A.

doi:10.1061/(asce)gm.1943-5622.0000086

Cited by 64 publications

(39 citation statements)

References 15 publications

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“…It is necessary to determine the pressure Numerical simulation of crater creating process in dynamic replacement method by smooth particle hydrodynamics 7 in shock compressed solid. The most popular ones (for structures under crash and impact) are MieGrüneisen equation of state and polynomial equation of state (after An [15]). …”

Section: (20)mentioning

confidence: 99%

“…All material models available in LS-DYNA software were tested in literature in the cases of large displacement and impact on soil (Thomas et al [14], An [15], Heymsfield and Fasanella 2008, Kulak and Schwer [10]). The MAT005 chosen by the authors is a relatively simple elastic-plastic model with pressure dependent parabolic yield function with linear isotropic hardening.…”

Section: Constitutive Equationmentioning

confidence: 99%

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Numerical Simulation of Crater Creating Process in Dynamic Replacement Method by Smooth Particle Hydrodynamics

Danilewicz

Sikora

2015

Studia Geotechnica Et Mechanica

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A theoretical base of SPH method, including the governing equations, discussion of importance of the smoothing function length, contact formulation, boundary treatment and finally utilization in hydrocode simulations are presented. An application of SPH to a real case of large penetrations (crater creating) into the soil caused by falling mass in Dynamic Replacement Method is discussed. An influence of particles spacing on method accuracy is presented. An example calculated by LS-DYNA software is discussed. Chronological development of Smooth Particle Hydrodynamics is presented. Theoretical basics of SPH method stability and consistency in SPH formulation, artificial viscosity and boundary treatment are discussed. Time integration techniques with stability conditions, SPH+FEM coupling, constitutive equation and equation of state (EOS) are presented as well.

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Section: (20)mentioning

confidence: 99%

Section: Constitutive Equationmentioning

confidence: 99%

Numerical Simulation of Crater Creating Process in Dynamic Replacement Method by Smooth Particle Hydrodynamics

Danilewicz

Sikora

2015

Studia Geotechnica Et Mechanica

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“…This type of model works well for geomaterials under high pressure and is capable of recapturing the strain rate effect. It has been utilized and validated in Katona , Simo et al , Tong and Tuan , An et al , Aráoz and Luccioni , and so on for both high and low strain rate phenomena. In addition, a variable bulk modulus is also employed herein to account for the nonlinear pressure‐volume relationship (EOS) of CPB under high amplitude impact.…”

Section: Modeling Approachmentioning

confidence: 99%

“…By following the work in Murray and Jiang and Zhao , and given that the curing time is not known, all of the cap parameters were calibrated against the UCS. Besides, in considering that fresh cemented tailings backfill may behave in a similar manner as saturated sandy soil when just placed and its strength has not been developed yet, the parameters of a cap model used for saturated sandy soil have also been used. In numerical cases where a nonlinear Drucker–Prager criterion has been used (e.g., Equation (a)), the initial linear portion of such envelope is adopted to determine c and φ , thus determining the UCS in accordance with the Mohr–Coulomb criterion.…”

Section: Formulation Of the Modelmentioning

confidence: 99%

A coupled chemo‐viscoplastic cap model for simulating the behavior of hydrating cemented tailings backfill under blast loading

Fall

2015

Num Anal Meth Geomechanics

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Summary Although the use of blasting has become a routine in contemporary mine operations, there is a lack of knowledge on the response of cement tailings backfills subjected to sudden dynamic loading. To rationally describe such a phenomenon, a new coupled chemo‐viscoplastic cap model is proposed in the present study to describe the behavior of hydrating cemented tailings backfill under blast loading. A modified Perzyna type of visco‐plasticity model is adopted to represent the rate‐dependent behavior of the cemented tailings backfill under blast loading. A modified smooth surface cap model is consequently developed to characterize the yield of the material, which also facilitates hysteresis and full compaction as well as dilation control. Then, the viscoplastic formulation is further augmented with a variable bulk modulus derived from a Mie–Gruneisen equation of state, in order to capture the nonlinear hydrostatic response of cemented backfills subjected to high pressure. Subsequently, the material properties required in the viscoplastic cap model are coupled with a chemical model, which captures and quantifies the degree of cement hydration. Thus, the behavior of hydrating cemented backfills under the impact of blast loading can be evaluated under any curing time of interest. The validation results of the developed model show a good agreement between the experimental and the predicted results. The authors believe that the proposed model will contribute to a better understanding of the performance of cemented backfills under mine blasting and contribute to evaluating and managing the risk of failure of backfill structures under such a dynamic condition. Copyright © 2015 John Wiley & Sons, Ltd.

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“…The applications of HSR loading can be related to blasting [1], earthquakes [2], mine blasts [3], aircraft wheel loading [4], dynamic compaction [5]; in situ subsurface explorations [6][7][8], pile driving and rapid load testing of piles [9], and projectile penetration [10,11]. These applications provoke transient loading characterized by large strains in the soil over very short periods of time.…”

Section: Introductionmentioning

confidence: 99%

A Model to Predict Strain Rate Dependency of Dry Silica Sand in Triaxial Compression

Suescun-Florez

Iskander

Bless

2015

J. dynamic behavior mater.

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A new method is proposed and evaluated to model the effect of strain rate on sand during triaxial compression. Triaxial compression tests were conducted on dry silica sand with rates of 0.1-10 %/s at 100-400 kPa confining pressures. Rate effects become significant at the higher confining pressures. It is found that a modified strain-energy-density approach provides a useful means to interpolate and extrapolate constant strain rate triaxial data to other strain rates.

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Simulation of Soil Behavior under Blast Loading

Cited by 64 publications

References 15 publications

Numerical Simulation of Crater Creating Process in Dynamic Replacement Method by Smooth Particle Hydrodynamics

Numerical Simulation of Crater Creating Process in Dynamic Replacement Method by Smooth Particle Hydrodynamics

A coupled chemo‐viscoplastic cap model for simulating the behavior of hydrating cemented tailings backfill under blast loading

A Model to Predict Strain Rate Dependency of Dry Silica Sand in Triaxial Compression

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