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Discover Simulants Methods & Measurements

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A public research platform for simulants, literature, experiments, properties, and DOI-backed source records. Built with reviewer verification in mind.

Initiated by the atlas maintainer as an open research infrastructure project for lunar materials work.

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TRI-1 | Lunar Simulant Atlas

TRI-1

lunar soil simulant

Overview Literature Properties Methods & measurements Applications

Literature

Defining / measurement papers

Modified model for shear stress distribution using TRI-1 Lunar soil simulant

P. Jayalekshmi, T. Tiruchirappalli, I. Nadu | 2018 | Journal of Theoretical and Applied Mechanics

DOI 10.15632/jtam-pl.56.1.137

Needs reviewOA PDF stored

Methods

9

Modified Shear Stress Model (SSM) developmentmodel development Wheel-soil interaction analysismechanical interaction Modified shear stress distribution modelshear stress analysis Modified shear stress model (SSM) derivationshear stress analysis Leachate chemistryChemical extraction | Biology and plant growth Bulk and tapped density measurementPowder density characterization | Benchmarking and comparison Direct shear testingGeotechnical characterization | Mobility and excavation Triaxial compression testingGeotechnical characterization | Mobility and excavation Wheel-soil interaction testingMobility test | Mobility and excavation

Properties

15

shear stress distributionanalyzed100%normal stress distributionanalyzed100%mobility performanceevaluated100%terrain parameter estimationperformed100%drawbar pull and driving torquecalculated100%comparative study of existing modelsperformed100%wheel-soil interaction modelingperformed100%shear stresscalculated using modified SSM95%normal stresscalculated using normal stress models95%densityminimum (1.15 g/cc) and maximum (1.88 g/cc)95%Nutrient availabilitymeasured from leachate, extractable nutrients, pH, or soluble salts70%Tapped densitymeasured from bulk/tapped powder density70%Shear strengthmeasured by direct shear or shear-box testing70%Friction anglederived from triaxial or shear-strength testing70%Trafficabilitymeasured from wheel slip, sinkage, traction, or drawbar behavior70%

Studies on the sinkages of rigid plain wheels and lugged wheels on TRI-1 lunar soil simulant

S. Jayalekshmi, P. G. Kumar | 2019 | Journal of Terramechanics

DOI 10.1016/j.jterra.2018.12.002

Needs reviewPDF missing

Methods

7

Leachate chemistryChemical extraction | Biology and plant growth wheel sinkage measurement on TRI-1sinkage testing Wheel sinkage testsinkage measurement Theoretical sinkage calculationtheoretical analysis Gravity effect analysisgravitational analysis wheel sinkage experimentssinkage testing sinkage prediction model developmentmodeling

Properties

11

Nutrient availabilitymeasured from leachate, extractable nutrients, pH, or soluble salts70%sinkagedynamic and static95%sinkagestatic95%sinkagestatic and dynamic95%sinkagetotal sinkage95%sinkagestatic sinkage95%gravity effect1/6th of Earth's gravity95%wheel load5.32 kg (small wheel)95%wheel load6.88 kg (large wheel)95%sinkage7.33 mm100%sinkage7.67 mm100%