COMSOL 6.3 - Solid Mechanics Material Properties: Geomechanics Material Model

Table 9-27: Geomechanics Models Materials.
Property Group and Property	Name/Variable	SI Unit
Drucker–Prager
Drucker–Prager alpha coefficient	alphaDrucker	1
Drucker–Prager k coefficient	kDrucker	Pa
Fracture parameters
Tensile fracture energy	Gft	J/m2
Compressive fracture energy	Gfc	J/m2
Hoek–Brown
Hoek–Brown m parameter	mHB	1
Hoek–Brown s parameter	sHB	1
Geological strength index	GSI	1
Disturbance factor	Dfactor	1
Intact rock parameter	miHB	1
Lade–Duncan
Lade–Duncan k coefficient	kLade	1
Matsuoka–Nakai
Matsuoka–Nakai mu coefficient	muMatsuoka	1
Mohr–Coulomb
Cohesion	cohesion	Pa
Angle of internal friction	internalphi	rad
Ottosen
Ottosen a parameter	aOttosen	1
Ottosen b parameter	bOttosen	1
Size factor	k1Ottosen	1
Shape factor	k2Ottosen	1
Soil material
Initial strength parameter	ksoil0	Pa
Hardening function, strength	ksoilh	Pa
Friction parameter	asoil	1
Dilatancy parameter	aqsoil	1
Initial cohesion	cohesion0	Pa
Hardening function, cohesion	cohesionh	Pa
Friction angle	phis	rad
Dilatation angle	psis	rad
Yield Stress Parameters
Uniaxial tensile strength	sigmaut	Pa
Uniaxial compressive strength	sigmauc	Pa
Biaxial compressive strength	sigmabc	Pa