Hardening rule and yield function for soils: Wen-Xi Huang; Jia-liu Pu; Yu-Jiong Chen Proc 10th International Symposium on Soil Mechanics and Foundation Engineering, Stockholm, 15–19 June 1981, V1, P631–634. Publ Rotterdam: A. A. Balkema, 1981doi:10.1016/0148-9062(83)91387-6NoneELSEVIERInternational Journal...
A hardening rule governs the variation of the material strength, which is commonly represented by the material constants in the yield function, as the material plastically deforms. Change in the material strength can also be envisaged as a change in the geometry and/or the location of the yield...
frozen mixed soilsIn this paper, a new double hardening constitutive model for frozen mixed soils is proposed, in which a new yield function is formulated based on the strength data of frozen soils. The associated flow rule is adopted, and the position, shape and size of the plastic ...
The associated flow rule is adopted for volumetric hardening, which means that the potential volumetric function is assumed to be the same as the volumetric yield function (see Equation (24)).The volumetric hardening parameter γv (one of the internal variables) is defined incrementally as(24)Δ...
At first yield, the hardening parameters are zero, and f (σ ij ,0) = f 0 (σ ij ) . The description of how the yield surface changes with plastic deformation, Eqn. 8.6.2, is called the hardening rule. Strain Softening Materials can also strain soften, for example soils. In this ...
This model is based on an existing model (Cambou-Jafari-Sidoroff) that takes into account deviatoric and isotropic mechanisms of plasticity. The flow rule used in the deviatoric mechanism is non-associated and a mixed hardening law controls the evolution of the yield surface. In this research ...
2.4.4.8 Hardening rule A hardening rule governs the variation of the material strength, which is commonly represented by the material constants in the yield function, as the material plastically deforms. Change in the material strength can also be envisaged as a change in the geometry and/or th...
In the model, the total strains are calculated using a stress-dependent stiffness, which is different for both loading and unloading/reloading. The hardening is assumed to be isotropic, depending on the plastic shear and volumetric strains. A non-associated flow rule is adopted when related to ...
Stress-Strain Rule (1) Normal stress Figure 4a shows the interface shear stress–strain curves under normal stress of 100 kPa, 200 kPa and 300 kPa, respectively (roughness R = 0.05 and water content ω = 20%). It can be seen that while the roughness of the steel plate and the water ...
Mróz multisurface hardening rule and yield surface translation through vector ν¯ [8]. The connecting vector ν¯ is defined as (5.1)ν¯=(R(i+1)−R(i))n¯+a¯(i+1)−a¯(i). In Fig. 5.1 and Eq. (5.1), the terms a¯(i+1) and a¯(i) correspond to the ...