Non-coaxial Deformation Characteristics of Fine Sand under Principal Stress Rotation

Author:

yue TENG,ping HU

Abstract

Abstract A series of pure principal stress rotation tests with dynamic hollow cylinder apparatus were conducted on saturated fine sand. The elastic torsional shear strain was reported to account for a large proportion of the total torsional shear strain, which could not be ignored. On this basis, the non-coaxial angle is redefined and the non-coaxial deformation characteristics and influencing factors of saturated fine sand are studied. The results show that the principal stress rotation will cause obvious plastic deformation of the fine sand and that the initial shear stress has a more significant influence on the non-coaxial deformation characteristics of the sand compared to the intermediate principal stress coefficient.

Publisher

IOP Publishing

Subject

General Engineering

Reference17 articles.

1. Non-coaxiality and energy dissipation in granular materials;Gutierrez;Soils and Foundations,2000

2. Principal axes observed during simple shear of a sand;Roscoe,1967

3. Microscopic deformation mechanism of granular material in simple shear;Oda;Soils and Foundations,1974

4. Deformation behaviour of anisotropic dense sand under principal stress axis rotation;Miiura;Soils and Foundations,1986

5. Deformation of granular material due to rotation of principal axes;Joer;Geotechnique,1998

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