Convergence of rotational hardening with bounds in clay plasticity. Issue 1 (21st October 2019)

• Record Type: Journal Article
• Authors: Dafalias, Y. F.; Taiebat, M.; Rollo, F.; Amorosi, A.
• Is Part Of: Géotechnique letters. Volume 10:Issue 1(2020)
• Page Start: 16
• Page End: 19
• Publication Date: 2019-10-21
• Subjects: anisotropy -- clays -- constitutive relations; Geotechnical engineering -- Periodicals; Engineering geology -- Periodicals; 624.151
• DOI: 10.1680/jgele.19.00012
• Languages: English
• ISSNs: 2045-2543

Abstract

Abstract : Convergence of the rotational hardening variable α used in the anisotropic models of clay plasticity, with a constitutively defined attractor/bound α b ( η ), function of the stress ratio η, under fixed η loading, is analytically investigated. It is analytically shown that depending on various parameters of the rate equation of the evolution of α, such convergence may or may not occur despite the apparent necessity of convergence stemming from the form of the evolution equation of α .