A strain localization analysis using a viscoplastic softening model for clay
type: Item
instance of: scholarly article
title: A strain localization analysis using a viscoplastic softening model for clay
zbMATH Open document ID: 0853.73058
DOI: 10.1016/S0749-6419(95)00020-8
author: F. Oka
author: Toshihisa Adachi
author: Atsushi Yashima
published in: International Journal of Plasticity
publication date: 1997-01-13T00:00:00Z
review text: The authors consider the undrained creep problem, in which deviatoric stress components are constant, the volumetric strain is zero, while the mean effective stress may be relaxed, in the framework of elasto-viscoplastic constitutive models for clay. The instability of the proposed problem is evaluated, and the critical stress ratio for the appropriate evolution equation is found to be the transition point between the stable and unstable regions in the Lyapunov sense. In a two-dimensional motion under plane strain undrained conditions, the preferred orientation of the localized zone (where infinitesimal periodic non-uniformities will grow in a homogeneous motion) is determined. From the numerical results performed by finite element method using the updated Lagrangian scheme, the authors found that the viscoplastic softening model can describe strain localization phenomena such as shear banding.
Mathematics Subject Classification ID: 74L10
Mathematics Subject Classification ID: 74C10
Mathematics Subject Classification ID: 74C99
zbMATH DE Number: 834222
zbMATH Keywords: stability
zbMATH Keywords: permeability
zbMATH Keywords: undrained creep problem
zbMATH Keywords: instability
zbMATH Keywords: critical stress ratio
zbMATH Keywords: finite element method
zbMATH Keywords: updated Lagrangian scheme
zbMATH Keywords: strain localization
zbMATH Keywords: shear banding
reviewed by: Sanda Cleja-Ţigoiu
MaRDI profile type: Publication
full work available at URL: s0749-6419(95)00020-8
OpenAlex ID: W2058500560
description: scientific article; zbMATH DE number 834222