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.
- dp_force v
\(\mathbf{F^d}\) - dashpot force in units force. Expressed in the contact plane coordinate system. This is a read-only property.
- dp_mode i
\(M_d\) - dashpot mode with default value 0.
- dp_nratio f
\(\beta_n\) - normal critical damping ratio with default value 0.0.
- dp_sratio f
\(\beta_s\) - 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
\(\mu\) - friction coefficient with default value 0.0.
- kn f
\(k_n\) - normal stiffness in units stress/disp, with default value 0.0.
- kratio f
\(\kappa^*\) - normal-to-shear stiffness ratio. This is a read-only property.
- ks f
\(k_s\) - shear stiffness in units stress/disp, with default value 0.0.
- rgap f
\(g_r\) - 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
\(\lambda_b\) - bending friction multiplier, with default value of 1.0.
- sb_cut f
\(\gamma\) - bond softening tensile strength factor.
- sb_force v
\(\mathbf{F}\) - linear force in units force with default value \(\mathbf{0}\). Expressed in the contact plane coordinate system.
- sb_mode i
\(M_l\) - normal-force update mode with default value 0 (absolute update mode). Incremental normal-force update mode is set with \(M_l\) = 1. When the bond is activated, \(M_l\) is automatically set to 1
- sb_moment v
\(\mathbf{M}\) - moment. Expressed in the contact plane coordinate system.
- sb_radius
\(\overline{R}\) - Effective contact radius. This is a read-only property.
- sb_rmul f
\(\lambda\) - 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
\(\zeta\) - bond softening factor.
- sb_shear f
\(\tau_{c}\) - bond shear strength in units stress. This is a read-only property.
- sb_sigma f
\(\sigma\) - 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
\(\tau\) - bond shear stress at bond periphery in units stress. This is a read-only property.
- sb_ten f
\(\sigma_c\) - bond tensile strength in units stress with default value 0.0.
- sb_tmul f
\(\lambda_t\) - Twisting friction multiplier, with default value of 1.0.
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