Irreversible Behaviour of Crushable Sands: a DEM Study

Antonio Gens; Matteo Ciantia; Marcos Arroyo

Irreversible Behaviour of Crushable Sands: a DEM Study

Antonio Gens
, Matteo Ciantia
, Marcos Arroyo

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	Proceedings of the 15th International Conference of the International Association for Computer Methods and Advances in Geomechnics
Place of Publication	Wuhan, China
Pages	1109-1114
Number of pages	6
Publication status	Published - Oct 2017
Event	15th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2017 - Wuhan, China Duration: 19 Oct 2017 → 23 Oct 2017

Conference

Conference	15th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2017
Country/Territory	China
City	Wuhan
Period	19/10/17 → 23/10/17

Keywords

Discrete element method
Granular materials
Behaviour irreversibility
Particle crushing

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Applied Mathematics

Cite this

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title = "Irreversible Behaviour of Crushable Sands: a DEM Study",

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.",

keywords = "Discrete element method, Granular materials, Behaviour irreversibility, Particle crushing",

author = "Antonio Gens and Matteo Ciantia and Marcos Arroyo",

note = "This work has been supported by the Ministry of Science and Innovation of Spain through the research grant BIA2011-27217 and BIA2014-59467-R. ; 15th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2017 ; Conference date: 19-10-2017 Through 23-10-2017",

year = "2017",

month = oct,

language = "English",

pages = "1109--1114",

booktitle = "Proceedings of the 15th International Conference of the International Association for Computer Methods and Advances in Geomechnics",

}

Gens, A, Ciantia, M & Arroyo, M 2017, Irreversible Behaviour of Crushable Sands: a DEM Study. in Proceedings of the 15th International Conference of the International Association for Computer Methods and Advances in Geomechnics. Wuhan, China, pp. 1109-1114, 15th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2017, Wuhan, China, 19/10/17.

TY - GEN

T1 - Irreversible Behaviour of Crushable Sands

T2 - 15th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2017

AU - Gens, Antonio

AU - Ciantia, Matteo

AU - Arroyo, Marcos

N1 - This work has been supported by the Ministry of Science and Innovation of Spain through the research grant BIA2011-27217 and BIA2014-59467-R.

PY - 2017/10

Y1 - 2017/10

N2 - 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.

AB - 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.

KW - Discrete element method

KW - Granular materials

KW - Behaviour irreversibility

KW - Particle crushing

UR - https://www.scopus.com/pages/publications/85079838353

M3 - Conference contribution

SP - 1109

EP - 1114

BT - Proceedings of the 15th International Conference of the International Association for Computer Methods and Advances in Geomechnics

CY - Wuhan, China

Y2 - 19 October 2017 through 23 October 2017

ER -

Irreversible Behaviour of Crushable Sands: a DEM Study

Abstract

Conference

Keywords

ASJC Scopus subject areas

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