Flat-Joint Model Properties
The properties of the Flat-Joint Model model are shown below for reference. More detailed information regarding these properties is presented here.
Note
Read-only properties are indicated by (r) at right in this listing.
- flatjoint
- fj_area f (r)
A(e) - area of element (e).
- fj_cen v (r)
x(e) - centroid location of element (e).
- fj_coh f
c - cohesion in units stress with default value 0.0.
- fj_cohres f
cr - residual cohesion in units stress with default value 0.0.
- fj_egap f (r)
g(e) - gap at centroid of element (e).
- fj_emod f (r)
E∗ - effective modulus.
- fj_fa f
ϕ - friction angle in units degrees with default value 0.0.
- fj_force v (r)
˜F - interface force.
- fj_fric f
μ - friction coefficient with default value 0.0.
- fj_gap f (r)
gs - surface gap.
- fj_gap0 f (r)
g0 - initial surface gap.
- fj_kn f
kn - normal stiffness in units stress/disp. with default value 0.0.
- fj_kratio f (r)
κ∗ - normal-to-shear stiffness ratio.
- fj_ks f
ks - shear stiffness in units stress/disp. with default value 0.0.
- fj_moment v (r)
˜M - interface moment.
- fj_mtype i (r)
initial microstructural type.
- fj_nal i (r; 3D ONLY)
Nα - number of elements in circumferential direction.
- fj_nr i (r)
Nr - number of elements in radial direction (total number of elements in 2D).
- fj_radius f (r)
R - flat-joint radius.
- fj_relbr v2 (r)
θθb - relative bend-rotation as a 2D vector.
- fj_resmode i
Mr - residual cohesion mode. If Mr=0, the shear stress drops to zero. If Mr=1, the shear stress drops to the residual value.
- fj_rmul f (r)
λ - radius multiplier.
- fj_shear f (r)
τ(e)c - shear strength in units stress at centroid of element (e).
- fj_sigma f (r)
σ(e) - normal stress at centroid of element (e).
- fj_slip b (r)
s(e) - slip state of element (e).
- fj_state i (r)
B(e) - bond state of element (e).
- fj_tau f (r)
τ(e) - shear stress at centroid of element (e).
- fj_ten f
σc - tensile strength in units stress with default value 0.0.
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