Interaction between dry granular materials and an inclined plate (comparison between large-scale DEM simulation and three-dimensional wedge model)

Kobayakawa, Murino; Miyai, Shinichiro; Tsuji, Tomohiro; Tanaka, Toshitsugu

doi:10.1016/j.jterra.2019.08.006

Cited by 14 publications

(6 citation statements)

References 24 publications

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“…It is very clear that the draught forces for both DZ and YS begin to stabilize at a displacement of about 140 mm but decrease to 0 gradually at a displacement of about 560 mm. Meanwhile, the signals of the draught force are fluctuating constantly, which corroborate the reports by Kasisira and du Plessis[48], Wang et al[47] and Kobayakawa et al[50].…”

supporting

confidence: 88%

3D Finite Element Simulation and Experimental Validation of a Mole Rat’s Digit Inspired Biomimetic Potato Digging Shovel

Wang

et al. 2022

Applied Sciences

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To reduce the draught force of a traditional planar potato digging shovel (DZ), a biomimetic potato digging shovel (YS), inspired by the mole rat’s digits, is designed, using the biomimetic macroscopic surface modification method. The finite element simulations, soil bin experiments, and field experiments for DZ and YS are conducted to explore the factors affecting draught force and to verify the feasibility and effectiveness of the biomimetic potato digging shovel. Results show that the soil–shovel interaction models predict the draught force well, but the simulations for the soil rupture distance ratio need to be further improved. The studied factors all have a great influence on the draught force of DZ and YS and they follow the order of cutting speed > digging depth > mounting angle. For the single shovels, YS, compared with DZ, increases the draught force at a low mounting angle but decreases the draught force by over 8.41% when the mounting angle is higher than 30°; for the grouped shovels, the draught force and fuel consumption of YS, compared with those of DZ, decline by over 13.33% and 9.18%, respectively. The reasons for the reduction in the draught force of YS are to make the soil mass tend to move upward and to change the soil’s state of motion and stress continually; thus, the compaction to the soil is reduced, and the soil becomes easier to be broken.

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supporting

confidence: 88%

3D Finite Element Simulation and Experimental Validation of a Mole Rat’s Digit Inspired Biomimetic Potato Digging Shovel

Wang

et al. 2022

Applied Sciences

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“…This case takes inspiration from the work of Gravish et al 61 who studied drag force fluctuations in the plowing of granular beds at different initial packing fractions. A Discrete Element Method (DEM) based study of the case was also performed by Kobayakawa et al 62 . Both of these studies observed increasing drag force fluctuations with an increasing initial packing fraction of the granular beds.…”

Section: Drag Variations In the Plowing Of Granular Mediamentioning

confidence: 99%

Efficacy of simple continuum models for diverse granular intrusions

et al. 2021

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“…Soil cutting is a fundamental process in soil-machine interaction relevant to excavation and propulsion (Muro, 1989;Wong, 2012;Li et al, 2013;Wong, 2014;Askari and Kamrin, 2016). The cutting process is characterized by horizontal displacements that are many times larger than the embedment of the object, resulting in very large soil deformation (Selig and Nelson, 1964;Yong and Hanna, 1977;Hambleton et al, 2014;Kashizadeh et al, 2014;Gravish et al, 2010Gravish et al, , 2014Kobayakawa et al, 2018Kobayakawa et al, , 2019.…”

Section: Soil Cutting Testmentioning

confidence: 99%

Small-scale Geotechnical Testing Using a Six-axis Robot

Jin¹,

Shi²,

Hambleton³

2020

Preprint

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Single-gravity (1-g) small-scale testing is a widely used method to investigate geomechanics problems that involve the interactions between soils and objects (e.g., structures or machine parts). This letter presents a new approach for performing 1-g model tests where a six-axis industrial robot functions as a versatile actuator capable of moving objects along virtually arbitrary trajectories, while simultaneously tracking multiple components of force and moment acting on the objects. A performance evaluation confirms that the robot's motion control and force measurement are sufficiently accurate for geotechnical model tests. This assessment is completed through two benchmarking exercises: (1) determining the failure envelope of a strip foundation subjected to combined loading and (2) quantifying the force-displacement history for the soil cutting process (e.g., for applications in soil-machine interaction).

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Interaction between dry granular materials and an inclined plate (comparison between large-scale DEM simulation and three-dimensional wedge model)

Cited by 14 publications

References 24 publications

3D Finite Element Simulation and Experimental Validation of a Mole Rat’s Digit Inspired Biomimetic Potato Digging Shovel

3D Finite Element Simulation and Experimental Validation of a Mole Rat’s Digit Inspired Biomimetic Potato Digging Shovel

Efficacy of simple continuum models for diverse granular intrusions

Small-scale Geotechnical Testing Using a Six-axis Robot

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