An elasto-viscoplastic model for soft clay

Z. Y. Yin, P. Y. Hicher, Y. Riou, H. W. Huang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

13 Citations (Scopus)


The purpose of this paper is to present the development of an elasto-viscoplastic model for normally consolidated clay. A three dimensional constitutive equation was derived based on the framework of Perzyna's overstress theory and Modified Cam-Clay model. It was implemented in a finite element program, and applied to analyze time-dependent behavior of soft clay. The influence of two viscous parameters, which can be determined by undrained triaxial compression tests, was studied. The proposed model was verified using observed laboratory responses of several natural clays. The results showed that the model can satisfactorily describe the stress-strain-rate behavior such as strain rate effect, creep and stress relaxation.

Original languageEnglish
Title of host publicationSoil and Rock Behavior and Modeling - Proceedings of the GeoShanghai Conference
Number of pages8
Publication statusPublished - 18 Dec 2006
Externally publishedYes
EventSoil and Rock Behavior and Modeling - Shanghai, China
Duration: 6 Jun 20068 Jun 2006

Publication series

NameGeotechnical Special Publication
ISSN (Print)0895-0563


ConferenceSoil and Rock Behavior and Modeling


  • Cam-Clay
  • Elasto-viscoplastic
  • Finite element
  • Overstress
  • Time-dependent

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology


Dive into the research topics of 'An elasto-viscoplastic model for soft clay'. Together they form a unique fingerprint.

Cite this