Fabric Study of Granular Materials after Compaction
Publication: Journal of Engineering Mechanics
Volume 125, Issue 12
Abstract
Numerous micromechanical models have been developed based on assemblies of spherical particles with certain fabric distributions. Most of these distributions are hypothetical, and only very few of them can be determined experimentally. This paper presents a study to provide some useful fabric information for granular material. The discrete element method is used to study the microscopic information for granular materials after compaction. Specimens with 520 identical ellipsoidal elements are generated and compressed under different conditions. Up to six different aspect ratios are used to study their effect on the compression process. Two different compression methods and five different microfrictions between particles are used. The fabric of the specimens after compaction, including the total number of contacts, the distribution of particle orientations, the distribution of branch vectors, the distribution of the length of branch vectors, and the spatial distribution of a similar length of branch vector, is presented. The relations between these fabrics and particle shape, microfriction, and the compression process are also developed.
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References
1.
Arulmoli, K., and Arulanandan, K. ( 1994). “Review of an electrical method for evaluation of stress ratio required to cause liquefaction and dynamic modulus.” Dynamic Geotechnical Testing II; ASTM STP 1213, ASTM, West Conshohocken, Pa., 118–133.
2.
Chang, C. S., Chao, S. J., and Chang, Y. (1995). “Estimates of elastic moduli for granular material with anisotropic random packing structure.” Int. J. Solids and Struct., 32(14), 1989–2008.
3.
Chen, Y. C., and Hung, H. Y. (1991). “Evolution of shear modulus and fabric during shear deformation.” Soils and Found., 31(4), 148–160.
4.
Cundall, P. A. (1971). “A computer model for simulating progressive, large-scale movements in block rock systems.” Proc., Symp. of the Int. Soc. of Rock Mech., International Society of Rock Mechanics, Lisbon, Portugal, Article 8.
5.
Cundall, P. A., and Strack, O. L. (1979). “A discrete numerical model for granular assemblies.” Geotechnique, London, 29(1), 47–65.
6.
Darbre, G. R., and Wolf, J. P. (1985). “Nonlinear elastic constitutive law for granular materials applicable to pebble-bed core.” Nuclear Engrg. and Design, 88, 161–168.
7.
Dobry, R., and Ng, T.-T. (1992). “Discrete modeling of stress-strain behavior of media at small and large strain.” Engrg. Computations, Swansea, U.K., 129–143.
8.
Dong, J.-J., and Pan, Y.-W. (1999). “Fabric and micromechanics model for non-spherical granular assembly.” Int. J. Numer. and Analytical Methods in Geomech., in press.
9.
Emeriault, F., and Cambou, B. (1996). “Mechanical modeling of anisotropic non-linear elasticity of granular medium.” Int. J. Solids and Struct., 33(18), 2591–2607.
10.
Fisher, N. I., Lewis, T., and Embleton, B. J. J. (1987). Statistical analysis of spherical data. Cambridge University Press, Cambridge, U.K.
11.
Konishi, J., Oda, M., and Nemat-Nasser, S. (1982). “Inherent anisotropy and shear strength of assembly of oval cross-sectional rods.” Proc., IUTAM Symp. on Deformation and Failure of Granular Mat., IUTAM, Delft, The Netherlands, 403–412.
12.
Kuo, C.-Y., and Frost, J. D. (1997). “Initial Fabric and Uniformity of A Sand Specimen—An Image Analysis Approach.” Proc., Mech. of Deformation and Flow of Particulate Mat., ASCE, New York, 214–227.
13.
Lee, X., Dass, W. C., and Manzione, C. W. (1992). “Characterization of granular material composite structures using computerized tomography.” Proc., 9th Conf. on Engrg. Mech., ASCE, New York, 268–271.
14.
Lin, X., and Ng, T.-T. (1997). “A three dimensional discrete element model using arrays of ellipsoids.” Geotechnique, London, 47(2), 319–329.
15.
Matsuoka, M., and Geka, H. (1983). “A stress-strain model for granular materials considering mechanism of fabric changes.” Soil and Found., 23(2), 83–97.
16.
Oda, M. (1972). “The mechanism of fabric changes during compressional deformation of sand.” Soils and Found., 12(2), 1–18.
17.
Oda, M., and Konishi, J. (1974). “Microscopic deformation mechanism of granular material in simple shear.” Soils and Found., 14(4), 25–38.
18.
Oda, M., Netmat-Nasser, S., and Mehrabadi, M. M. (1982). “A statistical study of fabric in an random assembly of spherical granules.” Int. J. Numer. and Analytical Methods in Geomech., 6(1), 77–94.
19.
Pan, Y.-W., and Dong, J.-J. (1999). “A micromechanics-based methodology for evaluating the fabric of granular material.” Geotechnique, London, in press.
20.
Rothenburg, L., and Bathurst, R. J. (1989). “Analytical study of induced anisotropy in idealized granular materials.” Geotechnique, London, 39(4), 601–614.
21.
Rothenburg, L., and Bathurst, R. J. (1992). “Micromechanical features of granular assemblies with planar elliptical particles.” Geotechnique, London, 42(2), 79–95.
22.
Santamarina, J. C., and Cascante, G. (1996). “Stress anisotropy and wave propagation: a micromechanical view.” Can. Geotech. J., 33(5), 770–782.
23.
Williams, J., and Mustoe, G. G. W. (1993). Proc., 2nd Int. Conf. on Discrete Element Methods, MIT, Cambridge, Mass.
Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 125 • Issue 12 • December 1999
Pages: 1390 - 1394
History
Received: Apr 28, 1999
Published online: Dec 1, 1999
Published in print: Dec 1999
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