@inproceedings{dafde8f9cdee4a378ef583ea1001e6d4,
title = "DEM Simulations of Critical State Behavior of Sand Under Triaxial Compression and Extension",
abstract = "This study focuses on examining the behaviors of dense and loose sand subjected to drained triaxial compression and extension using DEM. The research involved performing drained tests on samples, manipulating them under both traditional (constant confining pressure) and constant mean stress conditions using servo-control. The observed drained behavior qualitatively aligns with previously published laboratory findings. It is demonstrated that the void ratio of sand samples remains unaffected by initial packing densities and applied stress paths (CT/CP). The critical state (CS) line is unique regardless of the stress path (CT/CP) conditions, though it shows dependence on whether triaxial compression or extension is applied. Drawing upon the DEM results, a comparison and discussion of various failure criteria are presented. The Matsuoka criterion emerges as the most suitable at the CS. To describe structural anisotropy, a generalized microscopic fabric parameter is proposed, which appears to be unique regardless of the stress paths (CT/CP) conditions.",
keywords = "Critical state, DEM, Drained, Sand, Triaxial",
author = "Guobin Gong and Minyi Zhu and Yuanfeng Bao and Stephen Wilkinson",
note = "Publisher Copyright: {\textcopyright} The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.; 14th International Association for Engineering Geology and the Environment, IAEG 2023 ; Conference date: 21-09-2023 Through 27-09-2023",
year = "2024",
doi = "10.1007/978-981-99-9057-3_10",
language = "English",
isbn = "9789819990566",
series = "Environmental Science and Engineering",
publisher = "Springer Science and Business Media Deutschland GmbH",
pages = "131--142",
editor = "Sijing Wang and Runqiu Huang and Rafig Azzam and Marinos, {Vassilis P.}",
booktitle = "Engineering Geology for a Habitable Earth",
}