Advertisement

On the Simulation of the Cyclic Mobility Effect with an ISA-Hypoplastic Model

  • W. FuentesEmail author
  • C. Lascarro
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)

Abstract

The ISA-Hypoplasticity corresponds to an extended version of conventional Hypoplasticity to enable the simulation of some observed effects on cyclic loading. This extension offers novel features compared to the intergranular strain theory by Herle and Niemunis [4], including the incorporation of an elastic strain amplitude, to separate the elastic and plastic response, and the ability to reduce the plastic accumulation rate upon a larger number of cycles (\(N>10\)). In the present work, a modification to the ISA-hypoplastic model is described in order to enable the simulation of cyclic mobility effects exhibited by granular materials. The modification is based on a new state variable, able to detect paths at which the cyclic mobility effect is activated. With this information, some factors of the ISA-hypoplastic model are modified to deliver the proper response on paths showing cyclic mobility effects. Simulations examples are given to illustrate the new mechanism and a short analysis of the new parameters is also included.

References

  1. 1.
    Dafalias, Y., Manzari, M.: Simple plasticity sand model accounting for fabric change effects. J. Eng. Mech. ASCE 130(6), 622–634 (2004)CrossRefGoogle Scholar
  2. 2.
    Fuentes, W., Triantafyllidis, T.: ISA model: a constitutive model for soils with yield surface in the intergranular strain space. Int. J. Numer. Anal. Meth. Geomech. 39(11), 1235–1254 (2015)CrossRefGoogle Scholar
  3. 3.
    Mašín, D.: A hypoplastic constitutive model for clays. Int. J. Numer. Anal. Meth. Geomech. 29(4), 311–336 (2005)CrossRefGoogle Scholar
  4. 4.
    Niemunis, A., Herle, I.: Hypoplastic model for cohesionless soils with elastic strain range. Mech. Cohesive-frictional Mater. 2(4), 279–299 (1997)CrossRefGoogle Scholar
  5. 5.
    Poblete, M., Fuentes, W., Triantafyllidis, T.: On the simulation of multidimensional cyclic loading with intergranular strain. Acta Geotech. 11(6), 1263–1285 (2016)CrossRefGoogle Scholar
  6. 6.
    Pradhan, T., Tatsuoka, F., Sato, Y.: Experimental stress-dilatancy relations of sand subjected to cyclic loading. Soils Found. 29(1), 45–64 (1989)CrossRefGoogle Scholar
  7. 7.
    Weifner, T., Kolymbas, D.: A hypoplastic model for clay and sand. Acta Geotech. 2(2), 103–112 (2007)CrossRefGoogle Scholar
  8. 8.
    Wichtmann, T.: Karlsruhe fine sand data-base. Technical report, Institute of Soil and Rock Mechanics (IBF). Karlsruhe Institute of Technology (KIT) (2015). http://www.torsten-wichtmann.de
  9. 9.
    Wolffersdorff, V.: A hypoplastic relation for granular materials with a predefined limit state surface. Mech. Cohesive-frictional Mater. 1(3), 251–271 (1996)CrossRefGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.University del NorteBarranquillaColombia

Personalised recommendations