3D DEM analysis of soil excavation test on lunar regolith simulant

Xi, Banglu; Jiang, Mingjing; Cui, Liang

doi:10.1007/s10035-020-01070-6

Cited by 23 publications

(3 citation statements)

References 45 publications

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“…Among numerical schemes, the Discrete Element Method (DEM) [24] is the widely used method to solve the kinematics of granular particles with sufficient microscopic details [25]. Kawamoto et al [26] used DEM to simulate the macroscopic behaviors of granular materials influenced by particle shapes.…”

Section: Introductionmentioning

confidence: 99%

Predictive Model of a Mole-Type Burrowing Robot for Lunar Subsurface Exploration

Yuan

Zhao

et al. 2023

Aerospace

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In this work, a dynamic model is proposed to simulate the drilling and steering process of an autonomous burrowing mole to access scientific samples from the deep subsurface of the Moon. The locomotive module is idealized as a rigid rod. The characteristic parameters are considered, including the length, cross-section diameter, and centroid of a cylindrical rod. Based on classical Lagrangian mechanics, a 3-DOF dynamic model for the locomotion of this autonomous device is developed. By introducing resistive force theory, the interaction scheme between the locomotive body and the lunar regolith is described. The effects of characteristic parameters on resistive forces and torques are studied and discussed. Proportional-derivative control strategies are introduced to calculate the tracking control forces following a planned trajectory. The simulation results show that this method provides a reliable manipulation of a mole-type robot to avoid obstacles during the tracking control process in layered sediments. Overall, the proposed reduced-order model is able to simulate the operating and controlling scenarios of an autonomous burrowing robot in lunar subsurface environments. This model provides intuitive inputs to plan the space missions of a drilling robot to extract subsurface samples on an extraterrestrial planet such as the Moon or Mars.

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Section: Introductionmentioning

confidence: 99%

Predictive Model of a Mole-Type Burrowing Robot for Lunar Subsurface Exploration

Yuan

Zhao

et al. 2023

Aerospace

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“…In Jiang et al (2017), DEM simulations of soil cutting tests performed under different gravity conditions were examined. DEM modeling of a lunar soil simulant was also proposed in Xi et al (2021). In Li et al (2021), analog method experiments, which have a long history in tectonic modeling, were used to calibrate DEM models by comparing the granular structures formed during experiments with those yielded by DEM simulations.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the calibration phase can be preceded and supported by a sensitivity analysis, which gives insight into the model behavior when changing its parameters. In this context, past research includes the assessment of the influence of the size and shape of DEM grain parameters (Elekes and Parteli, 2021), the friction coefficient (Li et al, 2021), the damping coefficient (Jiang et al, 2017;Xi et al, 2021), and the friction and restitution coefficients (Zhu et al, 2022;Wang et al, 2021) on the angle of repose (AR) in a repose angle test model. The research conducted so far is extensive, but not exhaustive in any way.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity Analysis of the DEM Model Numerical Parameters on the Value of the Angle of Repose of Lunar Regolith Analogs

Młynarczyk,

Kolusz,

Gallina

2023

Artificial Satellites

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The discrete element method (DEM) is a numerical technique used in many areas of modern science to describe the behavior of bulk materials. Terramechanics of planetary soil analogs for in situ resource utilization activities is a research field where the use of DEM appears to be beneficial. Indeed, the close-to-physics modeling approach of DEM allows the researcher to gain much insight into the mechanical behavior of the regolith when it interacts with external devices in conditions that are hard to test experimentally. Nevertheless, DEM models are very difficult to calibrate due to their high complexity. In this paper, we study the influence of fundamental model parameters on specific simulation outcomes. We provide qualitative and quantitative assessments of the influence of DEM model parameters on the simulated repose angle and computational time. These results help to understand the behavior of the numerical model and are useful in the model calibration process.

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Influence of Lump Ore Ratio and Shapes on the Particle Flow Behavior Inside the Direct Reduction Shaft Furnace by Discrete Element Modeling Model

Liao

Zong

et al. 2022

steel research int.

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In recent years, with the attention given to hydrogen reduction‐related technologies, the parameter indicators of direct reduction in the shaft furnace have gained importance. Herein, the numerical simulation of the particle flow field in the shaft furnace is investigated with the help of discrete element method (DEM) model. In contrast to the subregional modeling and the single particle shape study of the previous studies, this study innovatively uses the real shape of the particles and the overall structure of the vertical furnace for modeling. The transient characteristics of solid particle flow under ten lump ore ratios and three shapes are considered. The results show that the mass fraction and the shape of lump ore have little effect on the particle falling speed, but have a significant effect on the particle segregation behavior. In addition, the void ratio responds to the permeability condition in the furnace, which is also influenced by the lump ore proportion and shape.

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3D DEM analysis of soil excavation test on lunar regolith simulant

Cited by 23 publications

References 45 publications

Predictive Model of a Mole-Type Burrowing Robot for Lunar Subsurface Exploration

Predictive Model of a Mole-Type Burrowing Robot for Lunar Subsurface Exploration

Sensitivity Analysis of the DEM Model Numerical Parameters on the Value of the Angle of Repose of Lunar Regolith Analogs

Influence of Lump Ore Ratio and Shapes on the Particle Flow Behavior Inside the Direct Reduction Shaft Furnace by Discrete Element Modeling Model

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