Modelling the time-dependent behaviour of granular material with hypoplasticity

Shun Wang, Wei Wu, Zhen Yu Yin, Chong Peng, Xuzhen He

Research output: Journal article publicationJournal articleAcademic researchpeer-review

13 Citations (Scopus)

Abstract

This paper presents a constitutive model for time-dependent behaviour of granular material. The model consists of 2 parts representing the inviscid and viscous behaviour of granular materials. The inviscid part is a rate-independent hypoplastic constitutive model. The viscous part is represented by a rheological model, which contains a high-order term denoting the strain acceleration. The proposed model is validated by simulating some element tests on granular soils. Our model is able to model not only the non-isotach behaviour but also the 3 creep stages, namely, primary, secondary, and tertiary creep, in a unified way.

Original languageEnglish
Pages (from-to)1331-1345
Number of pages15
JournalInternational Journal for Numerical and Analytical Methods in Geomechanics
Volume42
Issue number12
DOIs
Publication statusPublished - 25 Aug 2018

Keywords

  • creep
  • critical state
  • granular material
  • hypoplasticity
  • rate dependent
  • strain acceleration

ASJC Scopus subject areas

  • Computational Mechanics
  • Materials Science(all)
  • Geotechnical Engineering and Engineering Geology
  • Mechanics of Materials

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