Soft Bond Model Properties
The properties of the Soft-Bond Model are shown below for reference. More detailed information regarding these properties is presented here.
Note
Some properties are read only as stated below.
- softbond
- dp_force v
Fd - dashpot force in units force. Expressed in the contact plane coordinate system. This is a read-only property.
- dp_mode i
Md - dashpot mode with default value 0.
- dp_nratio f
βn - normal critical damping ratio with default value 0.0.
- dp_sratio f
βs - shear critical damping ratio with default value 0.0.
- emod f
E∗ - effective modulus in units force/area. This is a read-only property.
- fric f
μ - friction coefficient with default value 0.0.
- kn f
kn - normal stiffness in units stress/disp, with default value 0.0.
- kratio f
κ∗ - normal-to-shear stiffness ratio. This is a read-only property.
- ks f
- ks - shear stiffness in units stress/disp, with default value 0.0.
- rgap f
gr - reference gap in units length with default value 0.0.
- sb_area f
A - area of the contact. This is a read-only property.
- sb_bmul f
λb - bending friction multiplier, with default value of 1.0.
- sb_cut f
γ - bond softening tensile strength factor.
- sb_force v
F - linear force in units force with default value 0. Expressed in the contact plane coordinate system.
- sb_mode i
Ml - normal-force update mode with default value 0 (absolute update mode). Incremental normal-force update mode is set with Ml = 1. When the bond is activated, Ml is automatically set to 1
- sb_moment v
M - moment. Expressed in the contact plane coordinate system.
- sb_radius
¯R - Effective contact radius. This is a read-only property.
- sb_rmul f
λ - Radius multiplier. with default value 1.0.
- sb_slip b
s - slip state. This is a read only property.
- sb_slipb b
sb - bending slip state. This is a read only property.
- sb_slipt b
sb - twisting slip state. This is a read only property.
- sb_soft f
ζ - bond softening factor.
- sb_shear f
τc - bond shear strength in units stress. This is a read-only property.
- sb_sigma f
σ - bond normal stress at bond periphery in units stress. This is a read-only property.
- sb_state i
B - bond state. This is a read-only property.
- sb_tau f
τ - bond shear stress at bond periphery in units stress. This is a read-only property.
- sb_ten f
σc - bond tensile strength in units stress with default value 0.0.
- sb_tmul f
λt - Twisting friction multiplier, with default value of 1.0.
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