summation] and [summation]' are obtained by applying different linear transformations onto deviatoric stress
tensor S, reads, respectively
3])ult is the deviatoric stress
at failure and the asymptotic value of the model; [epsilon] is the axial deformation; and Ei is the initial tangent modulus.
The ratio of the increment of deviatoric stress
corresponding to the axial strain of 1.
The envelope of all possible states of soil is represented by the SBS displayed in Figure 1(b), where q stands for the equivalent deviatoric stress
On the other hand, the components of deviatoric stress
should approach negative infinity at the singularity case and positive infinity for very large deformations.
is a strain velocity tensor, [I] is a unit tensor, [S] is the deviatoric stress
tensor, and q is deviator stress, which is given by
l~acquisition allows laboratory study of thermo-hydro-mechanical behavior of cylindrical samples of rock and cement materials under a confining pressure of up at least 150 MPa, a deviatoric stress
, up to least 1000 MPa, and at a controlled temperature of up to at least 200 A C.
ij,mm] are the maximum and the minimum values of the deviatoric stress
tensor ij components during one loading cycle.
s] indicate the deviatoric stress
(), the effective mean principal stress, and the mobilized angle of inter-particle friction at steady state, respectively.
2] is a function (Anaraki, 2008) of the deviatoric stress
ratio tensor [[?
Where: I is unit tensor; -p is static pressure; T is deviatoric stress
The effect of the specimen reconstitution method on maximal deviatoric stress
is shown in Figure 8a.