Modeling shear & volumeric responses in stress probe tests

Xuxin Tu*, Richard J Finno

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


Soil responses are dependent on the stress path. This property is not typically considered in traditional constitutive relations for soils. This paper summarizes an original approach to modeling these soil responses, which resorts to the most basic form of any constitutive relation - the tangent modulus. It is shown that tangent moduli need to be correctly interpreted to account for characteristics of frictional materials, which results in an anisotropic tangent matrix with different coupling moduli. Moreover, experimentally derived relations can be established for each modulus to take incremental non-linearity into account, which essentially overcomes the limitation of traditional variable moduli models in simulating plastic behavior. These ideas have led to a new type of model that is able to accurately simulate soil responses in the stress probe tests. Copyright ASCE 2007.

Original languageEnglish (US)
Number of pages1
JournalGeotechnical Special Publication
Issue number173
StatePublished - Sep 19 2007
EventGeo-Denver 2007: New Peaks in Geotechnics - Denver, CO, United States
Duration: Feb 18 2007Feb 21 2007

ASJC Scopus subject areas

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


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