An Enhanced Generalized Plasticity Model for Coarse Granular Material considering Particle Breakage

Table 1

Parameters and related tests of the enhanced model.

Parameter type	Parameter	Method
Critical state	, , and	Conventional triaxial test or isotropic compression test
Nonlinear elastic	and	Conventional triaxial test
Plastic flow direction and loading direction	, , , , and	Conventional triaxial test
Plastic modulus	and	Isotropic or uniaxial test and unloading test