On the micro mechanics of yielding and hardening of crushable granular soils

de Bono, John P.; McDowell, Glenn R.

Abstract

Stress path tests are used to investigate the yield surface of a crushable numerical soil. Triaxial samples with isotropic and anisotropic stress histories are examined to determine the nature of the yield surface and to establish what governs yield. Two separate yield surfaces are exposed: a shear yield surface at low p’ and high η which is governed by minor breakage of fine particles, and a compressive yield surface at high p’ and low η, governed by bulk breakage across all particle sizes. The shear yield surface is dependent on stress history, whilst the compressive yield surface is isotropic.

Citation

de Bono, J. P., & McDowell, G. R. (2018). On the micro mechanics of yielding and hardening of crushable granular soils. Computers and Geotechnics, 97, https://doi.org/10.1016/j.compgeo.2018.01.010

• Journal Article Type: Article
• Acceptance Date: Jan 17, 2018
• Online Publication Date: Feb 3, 2018
• Publication Date: May 1, 2018
• Deposit Date: Jan 23, 2018
• Publicly Available Date: Feb 3, 2018
• Journal: Computers and Geotechnics
• Print ISSN: 0266-352X
• Electronic ISSN: 1873-7633
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 97
• DOI: https://doi.org/10.1016/j.compgeo.2018.01.010
• Keywords: Discrete element method; DEM; Sand; Yielding; Yield surface
• Public URL: https://nottingham-repository.worktribe.com/output/961991
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S0266352X1830020X