Granular Matter

, Volume 11, Issue 2, pp 129–137 | Cite as

Non-coaxial version of Rowe’s stress-dilatancy relation

  • Marte GutierrezEmail author
  • Jianfeng Wang


Non-coaxiality occurs when the directions of the principal plastic strain increments and the principal stresses deviate. Extensive experimental data have now conclusively shown that plastic flow in granular soils is non-coaxial particularly during loadings involving rotation of the principal stress directions. One way to integrate the effects of non-coaxiality is by modifying the expressions for energy dissipation and stress-dilatancy used in modeling plastic deformation of granular soils. In this regard, the paper’s main objective is to derive a non-coaxial version of Rowe’s stress-dilatancy relation, thereby making it more general and applicable to loadings involving principal stress rotation. The paper also applies Rowe’s non-coaxial stress-dilatancy equation in the determination of the effects of principal stress rotation in granular soils during simple shear loading conditions. Previous experimental data from simple shear tests on sand are used to validate the proposed non-coaxial version of Rowe’s stress-dilatancy relation.


Energy dissipation Dilatancy Flow rule Non-coaxiality Simple shear 


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Copyright information

© Government Employee: Colorado School of Mines 2009

Authors and Affiliations

  1. 1.Division of EngineeringColorado School of MinesGoldenUSA
  2. 2.Department of Building and ConstructionCity University of Hong KongKowloonHong Kong

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