A CREEP-INCLUSIVE NON-ASSOCIATIVE CAM-CLAY PLASTICITY MODEL ---INTERNATIONAL CONFERENCE ON RHEOLOGY AND SOIL MECHANICS, 12-16 SEPTEMBER 1988, COVENTRY, UK

A creep-inclusive non-associative plasticity model is developed within the framework of modified cam-clay theory. A second, horizontal yield surface is introduced within the modified cam-clay yield ellipse. Both yield surfaces isotropically harden during yield and expand with time as creep strains accumulate. The resulting plastic flow may not be associative with respect to either yield surface. This dual yield surface elasto-plastic constitutive model conforms closely to a unified phenomenological model for the stress-strain-time behavior of normally to lightly over-consolidated soft clay of low to intermediate sensitivity. The constitutive model is implemented within a large strain finite element consolidation program with a void ratio dependent permeability. The numerical model is shown to reproduce a variety of important facets of the time-dependent behavior of soft clays.(a) for the covering abstract of this conference see IRRD 818664.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/1851662731
• Corporate Authors:

  Elsevier Science Publishers

  Crown House, Linton Road
  Barking, Essex IG11 8JU,   England 
• Authors:
  • Kavazanjian, E
  • Hsieh, H-S
• Publication Date: 1988

Language

• English

Media Info

• Pagination: p. 29-43
• Monograph Title: INTERNATIONAL CONFERENCE ON RHEOLOGY AND SOIL MECHANICS, 12-16 SEPTEMBER 1988, COVENTRY, UK

Subject/Index Terms

• TRT Terms: Clay; Computer programs; Conferences; Creep; Deformation; Finite element method; Mathematical models; Plasticity; Rheology; Stresses; Time; Viscoelasticity
• Subject Areas: Data and Information Technology;

Filing Info

• Accession Number: 00487438
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 1-85166-273-1
• Files: ITRD, TRIS
• Created Date: Sep 30 1989 12:00AM