Kinetics of Microcracking and Dilatation in Polycrystalline Ice

  • Nirmal K. Sinha
Part of the International Union of Theoretical and Applied Mechanics book series (IUTAM)


The paper presents a micromechanically based, structure sensitive constitutive equation for creep and dilatation for uniaxial stress application. The model can be applied for constant stress as well as constant strain-rate loading conditions. It is based on intragranular dislocation creep enhanced by grain-facet size cracks produced during deformation by the embrittlement process that is caused by an intergranular sliding mechanism. Incorporation of the kinetics of microcracking activity, enhancement of the matrix creep by these cracks and the associated generation of void volume is the foundation of the theory.


Axial Strain Volumetric Strain Constant Stress Crack Density Minimum Creep Rate 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1991

Authors and Affiliations

  • Nirmal K. Sinha
    • 1
  1. 1.Geotechnical Section Institute for Research in ConstructionNational Research Council of CanadaOttawaCanada

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