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, 1981...
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...
Fig. 1. Schematic illustration of the bounding surface and radial mapping rule in multiaxial space. The essence of the bounding surface concept is the hypothesis that plastic deformations can occur for stress states either within or on the bounding surface. Thus, unlike classical yield surface elast...
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 ...
An extended yield condition of soils applicable to the range of negative pressure is proposed. A closed surface is formulated in a simple mathematical form not limited to the range of positive pressure. A hardening function of plastic volumetric strain is adopted, based on the linear relation of...
This law postulates that the friction stress at sliding is equal to a portion of the local shear yield stress. A particular case of this friction law is the maximum friction law. In this case, the friction stress at sliding is equal to the local shear yield stress. The surface on which ...
It provides a more realistic prediction of overconsolidated clay behavior while retaining the simplicity and the same number of model parameters as the MCC model. The HASP model introduces a new expression of the hardening rule with a state parameter as a state variable [28], and the yield ...
The reference yield surface, as shown in MCC, takes the plastic volumetric strain as the hardening parameter, and the current yield surface has the same form as the reference yield function, as shown in Figure 1. Figure 1. Current and reference yield surfaces. Reference yield surface equation...