Modelling strain-rate-dependency of natural soft clays combined with anisotropy and destructuration

Zhen-Yu Yin, Minna Karstunen

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The paper aims to investigate modelling the strain-rate-dependency of natural soft clays combined with anisotropy and destructuration using an elasto-viscoplastic model. The model is based on Perzyna’s overstress theory and the elastoplastic model S-CLAY1S. Tests at constant strain-rate and creep tests under both one-dimensional and triaxial conditions on several clays are simulated. Simulations highlight the loading scenarios in which it is necessary to account for anisotropy and/or destructuration in order to get accurate predictions. Comparisons between the predicted and measured results demonstrate that the proposed model can successfully reproduce the time-dependent behaviour of natural soft clays under different loading conditions.
Original languageEnglish
Pages (from-to)216-230
Number of pages15
JournalActa Mechanica Solida Sinica
Volume24
Issue number3
DOIs
Publication statusPublished - Jun 2011

Keywords

  • anisotropic materials
  • creep
  • time-dependent
  • debonding
  • strain-rate dependency
  • natural
  • soft clays
  • anisotropy
  • destructuration

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