The Prospect and Review of DEM Model Using in Saturated and Unsaturated Soil

Abstract:

The saturated and unsaturated soil were widely studied by many researchers nowadays. With the development of calculation mechanics and computer, the discrete element method (DEM), as a powerful technique, has been implemented in saturated soil mechanics. This paper review the development of DEM and its application in saturated soil research. Meanwhile, it also prospect the application of DEM in unsaturated soil research. Besides, it also raised some problems that might be met in the real practice and it also tried to put forward some reasonable methods to solve these problems. In the end, this paper put forward a new DEM contact model based on the surface energy to analysis unsaturated soil.

• Periodical: Applied Mechanics and Materials (Volumes 105-107)
• Pages: 1371-1375
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.105-107.1371
• Online since: September 2011
• Authors: De Cheng Feng, Wen Xin Zuo, Peng Cao
• Keywords: Contact Mechanics, Discrete Element Method (DEM), Unsaturated Soil Mechanics

References

[1] P K Thakur, J S Vinod, B Indraratna, Effect of particle breakage on cyclic densification of ballast: a DEM approach, Materials Science and Engineering, Vol.10(2010)

DOI: 10.1088/1757-899x/10/1/012229

[2] Erol Tutumluer, Hai Huang,etc, Aggregate shape effect on ballast tamping and railroad track lateral stability, the report on the Arema 2006 annual conference, TRB(2006)

[3] Thornton C, Interparticle sliding in the presence of adhesion, J phys D: Appl Phys, Vol.24(1991), pp.1942-1946

DOI: 10.1088/0022-3727/24/11/007

[4] Gong Xiaonan, Advanced Soil Mechanics, University of Zhejiang Press, Hangzhou(1996)

[5] Gye Chun Cho, etc, Unsaturated particulate materials: particle-level studies, Geotechnical and Geoenvironmental Engineering , Vol. 1(2001),pp.84-96

[6] M. J. Jiang, S. Lerouil, J. M. Konrad, Insight into shear strength functions of unsaturated granulates by DEM analyses, Computers and Geotechnics Vol. 31(2004), pp.473-479

DOI: 10.1016/j.compgeo.2004.07.001

[7] K. L. Johnson, K. Kendall, A. D. Roberts, Surface energy and the contact of elastic solids, Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences Vol. 324 (1971), pp.301-313

DOI: 10.1098/rspa.1971.0141

[8] K. L. Johnson, J. A. Greenwood, An adhesion map for the contact of elastic spheres, Colloid and interface science Vol. 192 (1997),pp.326-333

DOI: 10.1006/jcis.1997.4984

[9] R. Jones, H. M. Pollock, D. Geldart, A. Verlinden, Inter-particle forces in cohesive powders studied by AFM:effects of relative humidity, particle size and wall adhesion, Powder Technology 132(2003),pp.196-210

DOI: 10.1016/s0032-5910(03)00072-x

[10] Derjaguin B. V., Muller V. M., Toporov Yu. P., Effect of contact deformations on the adhesion of particles, Colloid and Interface Science Vol. 53 (1975), pp.314-326

DOI: 10.1016/0021-9797(75)90018-1

[11] K. L. Johnson, J. A. Greenwood, An adhesion map for the contact of elastic spheres, Colloid and interface science Vol. 192 (1997) ,pp.26-333

DOI: 10.1006/jcis.1997.4984

[12] A. R. Savkoor, G. A. D. Briggs, The effect of tangential force on the contact of elastic solids in adhesion, Proc. R. Soc. Lond. A. Vol. 356(1977), pp.103-114

DOI: 10.1098/rspa.1977.0123

[13] J. A. Greenwood, K. L. Johnson, The mechanics of adhesion of visco-elastic solids, Philosophical Magazine A, Vol. 43 (1981), pp.697-711

DOI: 10.1080/01418618108240402

[14] D. E. Hartley, W. Murgatroyd, Criteria for the break-up of thin liquid layers flowing isothermally over solid surface, Heat Mass Transfer Vol.7 (1964),pp.1003-1005

DOI: 10.1016/0017-9310(64)90042-0