Shear Strength and Stiffness Characterization of Lunar Simulant GRC-3
Publication: Journal of Aerospace Engineering
Volume 31, Issue 4
Abstract
Physical modeling experiments related to lunar in situ resource utilization activities use suitable soil simulants such as GRC-3. Only the index properties (e.g., specific gravity, particle size distribution, and maximum and minimum densities) compression indices, and shear strength parameters (peak angle of internal friction) of GRC-3 are currently available in the literature. In addition to the shear strength parameters, this work determined other important mechanical parameters such as critical state angle of internal friction, dilatancy angle, elastic modulus, and Poisson’s ratio using triaxial compression tests conducted at three different confining stresses of 25, 50, and 100 kPa. An additional set of triaxial specimens incorporated bender elements, which were used to determine small-strain shear wave velocity and shear modulus of GRC-3 at confining stresses ranging between 12.5 and 150 kPa. The confining stresses used in this work were lower than those used in other works on GRC-3 found in the literature. For extrapolating the behavior of terrestrial simulants to in situ surface lunar regolith, results obtained at smaller confining stresses are generally more relevant. The shear strength parameters of GRC-3 determined as part of this investigation compared well with those for GRC-3 and lunar regolith found in the literature, as well as lunar simulants GRC-1 and JSC-1A. Simple empirical correlations relating mechanical properties (angle of internal friction, dilatancy angle, elastic modulus, small-strain shear wave velocity, and maximum shear modulus) of GRC-3 as a function of its relative density or void ratio and confining stress are provided, so these properties can be readily estimated to support further analytical studies involving GRC-3.
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Acknowledgments
This work has been supported by the Vermont Space Grant under NASA Cooperative Agreement #NNX10AK67H. The authors are grateful to Mr. Colin Creager, Dr. Juan Agui, and Dr. Allen Wilkinson of NASA Glenn Research Center for providing GRC-3 and general support for the study. The authors thank Mr. Peter Larson for performing preliminary characterization of GRC-3 and Professors Khalid Alshibli and Ehsan Ghazanfari for their feedback on the analysis presented in this paper. The authors also thank the anonymous reviewers for their constructive review comments.
References
Alshibli, K., and Hasan, A. (2009). “Strength properties of JSC-1A lunar regolith simulant.” J. Geotech. Geoenviron. Eng., 673–679.
ASTM. (2007a). “Standard practice for dry preparation of soil samples for particle-size analysis and determination of soil constants.” ASTM D421, West Conshohocken, PA.
ASTM. (2007b). “Standard test method for particle-size analysis of soils.” ASTM D422, West Conshohocken, PA.
ASTM. (2011). “Method for consolidated drained triaxial compression test for soils.” ASTM D7181, West Conshohocken, PA.
Blewett, J., Blewett, I. J., and Woodward, P. K. (2000). “Phase and amplitude responses associated with the measurement of shear-wave velocity in sand by bender elements.” Can. Geotech. J., 37(6), 1348–1357.
Bolton, M. D. (1986). “The strength and dilatancy of sands.” Géotechnique, 36(1), 65–78.
Briaud, J. L. (2013). Geotechnical engineering: Unsaturated and saturated soils, Wiley, Hoboken, NJ.
Carrier, W. D., III, Bromwell, L. G., and Martin, R. T. (1973). “Behavior of returned lunar soil in vacuum.” J. Soil. Mech. Found. Div. Am. Soc. Civ. Eng., 99(11), 979–996.
Carrier, W. D., Olhpeft, G. R., and Mendell, W. (1991). “Physical properties of the lunar surface.” Lunar sourcebook: A user’s guide to the moon, G. H. Heiken, D. T. Vaniman, and B. M. French, eds., Cambridge University Press, Cambridge, U.K.
Casagrande, A. (1936). “Characteristics of cohesionless soils affecting the stability of slopes and earth fills.” J. Boston Soc. Civ. Eng., reprinted in Contributions in Soil Mechanics 1925–1940, Boston Society of Civil Engineers, Boston, 1940, 257–276.
Chakraborty, T., and Salgado, R. (2010). “Dilatancy and shear strength of sand at low confining pressures.” J. Geotech. Geoenviron. Eng., 527–532.
Chaney, R., Demars, K., Brignoli, E., Gotti, M., and Stokoe, K. (1996). “Measurement of shear waves in laboratory specimens by means of piezoelectric transducers.” Geotech. Testing J., 19(4), 384–397.
Dyvik, R., and Madshus, C. (1985). “Lab measurements of using bender elements.” Proc., Session, Advances in the Art of Testing Soils under Cyclic Conditions, V. Khosla, ed., ASCE, New York.
Edmunson, J., et al. (2010). “NASA lunar regolith simulant program.” 41st Lunar and Planetary Science Conf., Lunar and Planetary Institute, Houston.
Edwards, M. B., Dewoolkar, M. M., and Huston, D. R. (2016). “Geotechnical properties of Fillite: Simulant for planetary rover mobility studies.” J. Aerosp. Eng., 04016022.
Hardin, B. O., and Richart, F. E. (1963). “Elastic wave velocities in granular soils.” J. Soil Mech. Found. Div., 89(1), 33–66.
He, C., Zeng, X., and Wilkinson, A. (2013). “Geotechnical properties of GRC-3 lunar simulant.” J. Aerosp. Eng., 528–534.
Heiken, G., Vaniman, D., and French, B., eds. (1991). Lunar sourcebook: A user’s guide to the moon, Cambridge University Press, Cambridge, U.K.
Horvath, P., Latham, G. V., Nakamura, Y., and Dorman, H. J. (1980). “Lunar near-surface wave velocities at the Apollo landing sites as inferred from spectral amplitude ratios.” J. Geophys. Res., 85(B11), 6572–6578.
Iai, M., and Luna, R. (2011). “Direct shear tests on JSC-1A lunar regolith simulant.” J. Aerosp. Eng., 433–441.
Janbu, N. (1963). “Soil compressibility as determined by oedometer and triaxial tests.” European Conf. on Soil Mechanics and Foundation Engineering, Vol. 1, Deutsche Gesselschaft für Erd- und Grundbau, Essen, Germany, 19–25.
Mark, N., and Sutton, G. H. (1975). “Lunar shear wave velocity structure at Apollo sites 12, 14, and 15.” J. Geophys. Res., 80(35), 4932–4938.
McKay, D. S., et al. (1991). “The lunar regolith.” Chapter 7, Lunar sourcebook: A user’s guide to the moon, G. H. Heiken, D. T. Vaniman, and B. M. French, eds., Cambridge University Press, Cambridge, U.K.
McKay, D. S., Carter, J. L., Boles, W. W., Allen, C. C., and Allton, J. H. (1994). “JSC-1: A new lunar soil simulant.” Proc., Space IV, Engineering, Construction and Operations in Space, S. W. Johnson, ed., Vol. 2, ASCE, New York.
Oravec, H. A. (2009). “Understanding mechanical behavior of lunar soils for the study of vehicle mobility.” Ph.D. thesis, Case Western Reserve Univ., Cleveland.
Oravec, H. A., Zeng, X., and Asnani, V. M. (2010). “Design and characterization of GRC-1: A soil for lunar terramechanics testing in Earth-ambient conditions.” J. Terramech., 47(6), 361–377.
Schanz, T., and Vermeer, P. A. (1996). “Angles of friction and dilatancy of sand.” Géotechnique, 46(1), 145–151.
Seed, H. B., and Idriss, I. M. (1970). “Soil moduli and damping factors for dynamic response analyses.”, Univ. of California, Berkeley, CA.
Sibille, L., Carpenter, P., Schlagheck, R., and French, R. A. (2006). “Lunar regolith simulant materials: Recommendations for standardization, production, and usage.”, NASA, Washington, DC.
Suzuki, K., and Yamada, T. (2006). “Double strain softening and diagonally crossing shear bands of sand in drained triaxial tests.” Int. J. Geomech., 440–446.
Taylor, L. A., Pieters, C. M., and Britt, D. (2016). “Evaluations of lunar regolith simulants.” Planet. Space Sci., 126(Jul), 1–7.
Viggiani, G., and Atkinson, J. H. (1995). “Stiffness of fine-grained soil at very small strains.” Géotechnique, 45(2), 249–265.
Zeng, X., He, C., Oravec, H., Wilkinson, A., Agui, J., and Asnani, V. (2010). “Geotechnical properties of JSC-1A lunar soil simulant.” J. Aerosp. Eng., 111–116.
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Journal of Aerospace Engineering
Volume 31 • Issue 4 • July 2018
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©2018 American Society of Civil Engineers.
History
Received: Aug 16, 2016
Accepted: Nov 17, 2017
Published online: Mar 28, 2018
Published in print: Jul 1, 2018
Discussion open until: Aug 28, 2018
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