Micromechanical Formulation of the Yield Surface in the Plasticity of Granular Materials

Figure 1

Samples with 𝜙_𝜇=52^∘ and 𝑟₁/𝑟₂=1.1 (a), 𝜙_𝜇=26^∘ and 𝑟₁/𝑟₂=1.1 (b), 𝜙_𝜇=52^∘ and 𝑟₁/𝑟₂=1.4 (c), and 𝜙_𝜇=26^∘ and 𝑟₁/𝑟₂=1.4 (d).

(a)

(b)

(c)

(d)