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Sand Behavior upon Alternating Triaxial Compression and Extension: A Multiscale Analysis Using LS-DEM

Year: 2025

Type: conference-paper

Abstract: This study investigates the underlying mechanisms causing necking instability in granular materials. Using a digital twin created with the level-set discrete element method (LS-DEM), we simulate triaxial compression and extension cycles on a Hostun sand specimen within an x-ray tomograph. The simulation accurately replicates experimental observations, including stress-strain behavior, deviatoric strain field evolution, and necking initiation and progression during triaxial extension.

Source: IOP Conference Series Earth and Environmental Science

DOI: 10.1088/1755-1315/1480/1/012028

Authors: J. Cui, K. Karapiperis, Ø. Torgersrud, E. Andò, G. Viggiani, J. Andrade

Institutions: Columbia University, École Polytechnique Fédérale de Lausanne, Institut polytechnique de Grenoble, Norwegian Geotechnical Institute, Centre National de la Recherche Scientifique, Sols, Solides, Structures, Risques, Université Grenoble Alpes, California Institute of Technology

Language: English

Topic: Geotechnical Engineering and Soil Mechanics

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

OpenAlex ID: W4409317489

FWCI:

Cites: 7

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Related to: 10