Soil–projectile interaction during penetration of a transparent clay simulant

Ads, Abdelaziz; Iskander, Magued; Bless, Stephan

doi:10.1007/s11440-020-00921-z

Cited by 20 publications

(4 citation statements)

References 36 publications

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“…Recent work uses transparent soils to determine in detail the particle-structure interactions during impact penetration in cohesion-less soil [139] and cohssive soil [140]. Omidvar et al [141] conducted penetration tests using "refractive index-matched granular media" with macroscopic physical and mechanical properties replicating the behavior of natural soils to visualize, non-intrusively, in-situ granular kinematics under impact penetration in granular media.…”

Section: Natural Soil/synthetic Soil Models and Prototypesmentioning

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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Section: Natural Soil/synthetic Soil Models and Prototypesmentioning

confidence: 99%

Advances in Projectile Penetration Mechanism in Soil Media

et al. 2020

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“…Furthermore, the geometric evolution of fracture surfaces during in situ undrained shear strength tests was improved by MLPS transparent soil [ 10 ]. Additionally, Ads et al studied the projectile penetration as well as the tunnel settlement in MLPS transparent soils due to their internal transparency [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Time-Dependent Characteristics of MLPS Transparent Soil Strength

et al. 2022

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The time-dependent characteristics of transparent soil strength, composed of magnesium lithium phyllosilicate, is important for applying a thixotropic clay surrogate. The gas injection method was employed to obtain the strength, represented as cracking pressure, which was then correlated to variables including rest time, disturbance time, and recovery time. Three concentrations (3, 4, and 5%) were tested. The results show that the strength was directly proportional to the rest time, recovery time, and concentration while the disturbance time reversed. The calculated limit strengths for 3%, 4%, and 5% transparent soils were 3.831 kPa, 8.849 kPa, and 12.048 kPa, respectively. Experimental data also showed that the residual strength for higher concentration transparent soil was more significant than the lower ones. The elastic property immediately generated partial strength recovery after disturbance, while the viscosity property resulted in a slow recovery stage similar to the rest stage. The strength recovery rate was also sensitive to concentration. Furthermore, the strength with 3%, 4%, and 5% concentrations could regain limit values after sufficient recovery, which were calculated as 4.303 kPa, 8.255 kPa, and 14.884 kPa, respectively.

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“…Improving our understanding of the entire process of soil deformation around the pile is an important step forward for the field. The problem of the mechanics and deformation characteristics of the soil around the pile has been studied and discussed by many scholars using numerical simulation [1][2][3][4], theoretical model [5,6], and indoor physical test [7][8][9][10][11]. Due to better control of conditions and being more economically viable than in situ tests, physical model studies are being widely used in the study of the interaction between soil and expanded pile.…”

Section: Introductionmentioning

confidence: 99%

“…DIC technology has been widely used in geotechnical engineering due to the advantage of allowing high precision and non-contact full-field strain measurement [18][19][20]. Using the DIC technique, Tovar-Valencia et al [21] determined that an increase in the roughness of the shaft results in an increase in the average unit of shaft resistance and in displacements and strains in The problem of the mechanics and deformation characteristics of the soil around the pile has been studied and discussed by many scholars using numerical simulation [1][2][3][4], theoretical model [5,6], and indoor physical test [7][8][9][10][11]. Due to better control of conditions and being more economically viable than in situ tests, physical model studies are being widely used in the study of the interaction between soil and expanded pile.…”

Section: Introductionmentioning

confidence: 99%

Study on Soil Displacement Fields around the Expanded Body of Drill-Expanded Concrete Piles Based on DIC Technique

Deng

Niu

et al. 2021

Applied Sciences

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The soil displacement field around a drill-expanded concrete pile is noticeably different from that of an equivalent section pile placed under axial load due to the mutual embedment between the expanded body and the soil. It is important to study the soil displacement field around drill-expanded concrete piles in order to understand the mechanisms of interaction between the pile and the soil. First, the model test of the half-face pile installed in undisturbed soil and the model test of the half-face pile installed in sand were used to study the soil displacement field around the pile. Then, the entire process of the soil displacement field’s formation and development under the load was observed by using digital image correlation (DIC) techniques. Finally, numerical simulation was used to verify the results of the model tests. The results show that the displacement characteristics of the soil around the pile in the undisturbed soil and sand are basically the same. There is a clear soil compression zone under the expanded body, and the magnitude and density of the displaced soil in the compression zone are much higher than in other areas. Both the vertical displacement and the horizontal displacement gradually decrease as the distance from the expanded body and the burial depth increase. The horizontal displacement of the soil under the expanded body follows a trend of first moving toward the pile body and then moving away from it. The results of the numerical simulation are basically consistent with the results of the model test, indicating that the results of the model test are relatively reliable.

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Soil–projectile interaction during penetration of a transparent clay simulant

Cited by 20 publications

References 36 publications

Advances in Projectile Penetration Mechanism in Soil Media

Advances in Projectile Penetration Mechanism in Soil Media

Experimental Study on the Time-Dependent Characteristics of MLPS Transparent Soil Strength

Study on Soil Displacement Fields around the Expanded Body of Drill-Expanded Concrete Piles Based on DIC Technique

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