Effects of stress paths on triaxial compression mechanical properties of QH-E lunar soil simulant studied by DEM simulation
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DOI: 10.1007/s10035-020-0999-y
Abstract: In this paper, three different stress paths [conventional triaxial compression (CTC), constant principal stress triaxial compression (PTC), and hydrostatic compression (HC)] are chosen to investigate the effects of stress paths on the mechanical properties of… read more here.
Keywords: dilatancy; shear dilatancy; soil simulant; stress ... See more keywords
Effect of grain size distribution on stress-strain behavior of lunar soil simulants
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DOI: 10.1016/j.asr.2017.04.029
Abstract: Geotechnical behavior of the lunar soils is important for engineering analyses regarding various aspects of the future extraterrestrial settlement plans including lunar exploration and construction. Many lunar soil simulants had been produced so far, in… read more here.
Keywords: lunar; lunar soil; grain size; soil simulants ... See more keywords
DEM thermal simulation of bit and object in drilling of lunar soil simulant
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DOI: 10.1016/j.asr.2018.06.013
Abstract: Abstract The bit and object thermal problem was investigated in this study with particular regard to the drilling of lunar soil simulant. The discrete element method (DEM) was used to establish a thermal model of… read more here.
Keywords: bit object; soil simulant; dem; drilling lunar ... See more keywords
Development of assessment methods of lunar soil simulants with respect to chemical composition
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DOI: 10.1016/j.asr.2019.01.015
Abstract: Abstract The present study concerns a development of assessment tools for lunar soil simulant chemical composition. Prior to developing the methodology, lunar soil was investigated by using the lunar soil samples from Apollo missions then… read more here.
Keywords: lunar soil; chemical composition; soil; development assessment ... See more keywords
Invariance of conveying capacity for drilling into lunar soil simulant
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DOI: 10.1016/j.asr.2019.08.001
Abstract: Abstract In this paper, we study the conveying dynamics in the helical groove of an auger drilling into lunar simulant. We demonstrate that the stress-coupling effect of the conveyed granules by the groove of a… read more here.
Keywords: drilling lunar; lunar soil; capacity drilling; soil simulant ... See more keywords
Investigation of effect of stones on lunar regolith drilling using DEM
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DOI: 10.1016/j.compgeo.2020.103958
Abstract: Abstract In lunar soil drilling, stones have significant influences on sampling. Herein, stones are classified into greater stones and supramaximal stones based on their sizes. Five simulation conditions with different sizes and positions of the… read more here.
Keywords: stone; effect; supramaximal stones; lunar soil ... See more keywords
Non-probabilistic convex model theory to obtain failure shear stress of simulated lunar soil under interval uncertainties
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DOI: 10.1016/j.probengmech.2018.06.002
Abstract: Abstract The properties of the simulated lunar soil, which are of great importance to guide the investigation on the lunar due to the rarity and preciousness of the lunar soil, are extremely complex such that… read more here.
Keywords: shear stress; method; simulated lunar; soil ... See more keywords
Multivariate Comparison of Lunar Soil Simulants
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DOI: 10.1061/(asce)as.1943-5525.0001075
Abstract: AbstractSince 1960, when the first probes landed on the Moon, multiple specimens of lunar soil have been available for research. The very limited volume of lunar soil samples means that they can be... read more here.
Keywords: lunar soil; comparison lunar; soil; soil simulants ... See more keywords
In situ resource utilization of lunar soil for highly efficient extraterrestrial fuel and oxygen supply
Sign Up to like & getrecommendations! Published in 2022 at "National Science Review"
DOI: 10.1093/nsr/nwac200
Abstract: ABSTRACT Building up a lunar settlement is the ultimate aim of lunar exploitation. Yet, limited fuel and oxygen supplies restrict human survival on the Moon. Herein, we demonstrate the in situ resource utilization of lunar… read more here.
Keywords: lunar soil; extraterrestrial fuel; fuel oxygen;