Fundamentals - Of Plasticity In Geomechanics Pdf |work|

Fundamentals of Plasticity in Geomechanics — Overview (suitable for a PDF)

1. Scope and purpose

Provide a concise introduction to plasticity concepts as applied to soils and rocks: why elastic models fail, when plastic behavior matters (large strains, yield, permanent deformation, collapse, shear failure), and typical geotechnical problems that require plasticity (bearing capacity, slope stability, settlement, consolidation with shear, tunnel face stability).

• Critical State Line (CSL): A unique line in (v, p', q) space where shearing can continue indefinitely without changes in volume or effective stress. At critical state: dq = 0 and dv = 0.
• State Parameter: Proposed by Been & Jefferies, it combines void ratio and mean stress to predict whether a soil will dilate or contract.

1. Bearing capacity of shallow foundations.
2. Lateral earth pressure on retaining walls.
3. Stability analyses of natural and man-made slopes.

• Assumes isotropic elasticity
• Not for highly anisotropic or cemented soils

[ \tau = c + \sigma \cdot \tan(\phi) ]

• 5.1 Mohr-Coulomb
• 5.2 Drucker-Prager
• 5.3 Matsuoka-Nakai

The theory of plasticity in geomechanics explains the irreversible deformation of soil and rock materials fundamentals of plasticity in geomechanics pdf