Irreversible Behaviour of Crushable Sands: a DEM Study

Antonio Gens, Matteo Ciantia, Marcos Arroyo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The irreversible behaviour of crushable sands is investigated by means of a Discrete Element Method (DEM) analogue. The calculations have been performed using a recently developed procedure to simulate particle crushing that significantly enhances the computational efficiency of the method. The DEM analogue is subjected to a comprehensive set of stress probes in the triaxial plane in order to identify the basic mechanisms contributing to the total deformation. Three contributions to incremental strains are distinguished: elastic, plastic-structural and plastic-crushing. The behaviour observed appears to be consistent with the classic tenets of elasto-plasticity. The plastic mechanisms associated with fabric changes and with crushing are, however, different. In addition, the plastic flows for the two mechanism do not follow the normality rule. The same type of behaviour has been obtained under a wide variety of stress conditions and stress levels.
Original languageEnglish
Title of host publicationProceedings of the 15th International Conference of the International Association for Computer Methods and Advances in Geomechnics
Place of PublicationWuhan, China
Pages1109-1114
Number of pages6
Publication statusPublished - Oct 2017
Event15th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2017 - Wuhan, China
Duration: 19 Oct 201723 Oct 2017

Conference

Conference15th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2017
CountryChina
CityWuhan
Period19/10/1723/10/17

Keywords

  • Discrete element method
  • Granular materials
  • Behaviour irreversibility
  • Particle crushing

Fingerprint Dive into the research topics of 'Irreversible Behaviour of Crushable Sands: a DEM Study'. Together they form a unique fingerprint.

Cite this