A Unified Elastoplastic Model of Unsaturated Soils Considering Capillary Hysteresis

Figure 5

Model prediction for wetting tests at different net stresses: (a) relation between mean net stress and specific volume; (b) soil-water characteristic curve. It is assumed here that 𝑏⁰_DR=290 kPa, 𝑏⁰_WT=30 kPa, 𝑆^irr_𝑟=0.3, 𝑑⁰_DR=𝑑⁰_WT=1.0, 𝛼_DR=3500 kPa, 𝛼_WT=1500 kPa, 𝑟=6.5, 𝑚=0.012, and 𝜀^𝑝_𝑣,max=0.25.

(a)

(b)