On convergence of rotational hardening with bounds in clay plasticity. Issue 3 (24th June 2019)

• Record Type: Journal Article
• Authors: Dafalias, Y. F.; Taiebat, M.; Rollo, F.; Amoros, A.
• Is Part Of: Géotechnique letters. Volume 9:Issue 3(2019)
• Page Start: 1
• Page End: 14
• Publication Date: 2019-06-24
• Subjects: anisotropy -- clays -- constitutive relations -- fabric/structure of soils -- plasticity; Geotechnical engineering -- Periodicals; Engineering geology -- Periodicals; 624.151
• DOI: 10.1680/jgele.19.00012
• Languages: English
• ISSNs: 2045-2543

Abstract

Abstract : The convergence of the rotational hardening variable α used in anisotropic models of clay plasticity, with a constitutively defined attractor/bound αb ( η ) function of the stress ratio η, under fixed η loading, is analytically investigated. It is rigorously shown that depending on various parameters of the rate equation of 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 .