The gap element properties are as follows:
- Initial Gap (U0)
the initial gap opening.
- Preload (F0)
is the preload.
- Axial Stiffness of Closed Gap (KA)
axial stiffness for the closed gap.
- Axial Stiffness of Open Gap (KB)
axial stiffness for the open gap.
- Transverse Stiffness (KT)
transverse stiffness when the gap is closed. It is recommended that KT ≥ (0.1 * KA).
- Coeff of Static Friction (MU1)
coefficient of static friction for the adaptive element or coefficient of friction in the y transverse direction for the non adaptive gap element.
- Coeff of Kinetic Friction (MU2)
coefficient of kinetic friction for the adaptive gap element or coefficient of friction in the z transverse direction for the non adaptive gap element.
- Max Allowable Penetration (TMAX)
maximum allowable penetration used in the adjustment of penalty values. The positive value activates the penalty value adjustment.
- Max Allowable Adjustment Ratio (MAR)
maximum allowable adjustment ratio for adaptive penalty values KA and KT.
- Fraction of TMAX Defining Lower Bound (TRMIN)
fraction of TMAX defining the lower bound for the allowable penetration. (Default = 0.001)
- Normal X1
the normal value for the X direction.
- Normal X2
the normal value for the Y direction.
- Normal X3
the normal value for the Z direction.