Abstract
The macroscopic mechanical properties of colloidal particle gels strongly depend on the local arrangement of the powder particles. Experiments have shown that more heterogeneous microstructures exhibit up to one order of magnitude higher elastic properties than their more homogeneous counterparts at equal volume fraction. In this paper, packings of spherical particles are used as model structures to computationally investigate the elastic properties of coagulated particle gels as a function of their degree of heterogeneity. The discrete element model comprises a linear elastic contact law, particle bonding and damping. The simulation parameters were calibrated using a homogeneous and a heterogeneous microstructure originating from earlier Brownian dynamics simulations. A systematic study of the elastic properties as a function of the degree of heterogeneity was performed using two sets of microstructures obtained from Brownian dynamics simulation and from the void expansion method. Both sets cover a broad and to a large extent overlapping range of degrees of heterogeneity. The simulations have shown that the elastic properties as a function of the degree of heterogeneity are independent of the structure generation algorithm and that the relation between the shear modulus and the degree of heterogeneity can be well described by a power law. This suggests the presence of a critical degree of heterogeneity and, therefore, a phase transition between a phase with finite and one with zero elastic properties.
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Fakhimi A., Villegas T.: Rock Mech. Rock Eng. 40, 193 (2007)
Rognon P.G., Roux J.N., Wolf D., Naaím M., Chevoir F.: Europhys. Lett. 74, 644 (2006)
Ottino J.M., Khakhar D.V.: Annu. Rev. Fluid Mech. 32, 55 (2000)
Zaccone A., Lattuada M., Wu H., Morbidelli M.: J. Chem. Phys 127, 174512 (2007)
Gardiner B.S., Tordesillas A.: Powder Technol. 161, 110 (2006)
Silbert L.E., Ertaş D., Grest G.S., Halsey T.C., Levine D.: Phys. Rev. E 65, 031304 (2002)
Martin C.L., Bordia R.K.: Phys. Rev. E 77, 031307 (2008)
Cates M.E., Wittmer J.P., Bouchaud J.P., Claudin P.: CHAOS 9, 511 (1999)
Atman A.P.F., Brunet P., Geng J., Reydellet G., Combe G., Claudin P., Behringer R.P., Clément E.: J. Phys. Condens. Matter 17, S2391 (2005)
Schenker I., Filser F.T., Aste T., Herrmann H.J., Gauckler L.J.: Phys. Rev. E 80, 021302 (2009)
Hütter M.: J. Colloid Interface Sci. 231, 337 (2000)
Schenker I., Filser F.T., Aste T., Gauckler L.J.: J. Eur. Ceram. Soc. 28, 1443 (2008)
Hütter M.: Phys. Rev. E. 68, 031404 (2003)
Gauckler L.J., Graule T., Baader F.: Mater. Chem. Phys. 61, 78 (1999)
Tervoort E., Tervoort T.A., Gauckler L.J.: J. Am. Ceram. Soc. 87, 1530 (2004)
Wyss H.M., Romer S., Scheffold F., Schurtenberger P., Gauckler L.J.: J. Colloid Interface Sci. 241, 89 (2001)
Wyss H.M., Hütter M., Müller M., Meier L.P., Gauckler L.J.: J. Colloid Interface Sci. 248, 340 (2002)
Balzer B., Hruschka M.K.M., Gauckler L.J.: J. Colloid Interface Sci. 216, 379 (1999)
Wyss H.M., Deliormanli A.M., Tervoort E., Gauckler L.J.: AIChE J. 51, 134 (2005)
Wyss H.M., Tervoort E., Meier L.P., Müller M., Gauckler L.J.: J. Colloid Interface Sci. 273, 455 (2004)
Balzer B., Hruschka M.K.M., Gauckler L.J.: J. Am. Ceram. 84, 1733 (1999)
Hesselbarth D., Tervoort E., Urban C., Gauckler L.J.: J. Am. Ceram. Soc. 84, 1689 (2001)
Hesselbarth, D.: Quellfähige Polymerbinder in Aluminiumoxid-Suspensionen (Ph.D. thesis no. 13404, ETH Zurich, Switzerland, 2000) http://e-collection.ethbib.ethz.ch
Cundall P.A., Strack O.D.L.: Géotechnique. 29, 47 (1979)
PFC3D User’s manual: (Itasca Consulting Group, Inc., Minneapolis, Minnesota, USA) (1995)
Brown E.T.: Analytical and computational methods in engineering rock mechanics. Allen & Unwin, London (1987)
Schenker I., Filser F.T., Gauckler L.J.: Granul. Matter. 12, 437 (2010)
Hütter, M.: Brownian dynamics simulation of stable and of coagulating colloids in Aqueous Suspension (Ph.D. thesis no. 13107, ETH Zurich, Switzerland, 1999) http://e-collection.ethbib.ethz.ch
Russel W.B., Saville D.A., Schowalter W.R.: Colloidal dispersions. Cambridge University Press, New York (1989)
Schenker I., Filser F.T., Herrmann H.J., Gauckler L.J.: Granul. Matter. 11, 201 (2009)
Torquato S., Lu B., Rubinstein J.: Phys. Rev. A. 41, 2059 (1990)
Yanez J.A., Shikata T., Lange F.F., Pearson D.S.: J. Am. Ceram. Soc. 79, 2917 (1996)
Benguigui L.: Phys. Rev. Lett. 53, 2028 (1984)
Bergman D.J.: Phys. Rev. E. 65, 026124 (2002)
Johnson K.L., Kendall K., Roberts A.D.: Proc. R. Soc. Lond. A. 324, 301 (1971)
Madadi M., Tsoungui O., Lätzel M., Luding S.: Int. J. Sol. Struct. 41, 2563 (2004)
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Schenker, I., Filser, F.T., Hütter, M. et al. The influence of the degree of heterogeneity on the elastic properties of random sphere packings. Granular Matter 14, 333–340 (2012). https://doi.org/10.1007/s10035-012-0316-5
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DOI: https://doi.org/10.1007/s10035-012-0316-5