Figure - available from: Acta Geotechnica
This content is subject to copyright. Terms and conditions apply.
Tests considering the direction of specimen and the direction of stresses: a traditional test; b rotating specimen; c rotating stresses
Source publication
The principal stress rotation is often studied by considering the uniaxial rotation of principal stress. In this paper, the stress path on biaxial rotation of principal stresses is considered. The hollow cylindrical apparatus was used to achieve the principal stress rotation around the second stress principal axis. A novel specimen preparation devi...
Similar publications
Power characteristics become one of the important performance measures of lithium-ion batteries as high-power applications such as electric vehicles are emerging. Among several electrochemical steps that limit the power characteristics, phase transition kinetics is known as the limiting step for two-phase coexisting (biphasic) materials. In this st...
Citations
To clarify the stress–strain behaviour, strength on the deviatoric plane, shear band formation, and dilatancy characteristics of aeolian sand under three-dimensional loading conditions, a series of true-triaxial tests with various intermediate principal stress coefficients b ∈ [0.0, 1.0] at constant effective mean principal stress p' were conducted under drained and undrained conditions. The results presented that the variations of the stress–strain, strength, and effective internal friction angle show its significant dependence on the relative magnitude of the intermediate principal stress expressed in terms of the b value. Because a clear penetrating shear band was produced in the prismatic specimen at b = 0.2 and b = 0.4, the stress–strain response exhibits softening, and its peak shear stress and effective internal friction angle are reduced. Besides, shear bands often appear in the hardening regime. Moreover, the dilatancy was the weakest at b = 0.0 and the strongest at b = 0.4, which depended on the stress path in terms of the b value. The peak shear stress on the deviatoric plane decreased in a transverse “S” shape with the b value varying from 0.0 to 1.0, correspondingly, the effective internal friction angle increased first and then decreased. But in the case of increasing p' value, aeolian sand has a unified critical state line and phase transformation line at constant b value.
