Analysis of plasticity and non-coaxiality in geomaterials
Abstract
A historical review of the institutive models used in geomechanics is presented. The differences between these models originate in either the fundamental mathematical or mechanical principles. The consequences of non-coaxiality of the principal direction of stresses and plastic strain rates is studied with respect to the mechanical formulation and its numerical simulation. The following are detailed: finite element formulation of boundary problems; formulation of double shearing for plasma strain conditions; analysis of double shearing with perfect plasticity; general theory of double shearing; and formulation of double shearing with hardening.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1991
- Bibcode:
- 1991PhDT........12T
- Keywords:
-
- Axial Strain;
- Plastic Properties;
- Rock Mechanics;
- Shear Stress;
- Soil Mechanics;
- Strain Rate;
- Finite Element Method;
- Mathematical Models;
- Shear;
- Structural Properties (Geology);
- Geophysics