Mooring Line

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Mooring Line

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Geometric Properties

Input:

Description

Unstretched Length:

The length of the mooring line.

Minimum Mesh Density:

The minimum element length to be used in creating the finite element model of the mooring line.

Maximum Mesh Density:

The maximum element length to be used in creating the finite element model of the mooring line.

Diameter:

The diameter of the mooring line.

Notes

(a)Refer to Line Mesh Generation for a detailed discussion of the automatic mesh creation facility.

Structural Properties

Input:

Description

Axial Stiffness:

The axial stiffness for the mooring line.

Mass per unit Length:

The mass per unit length of the mooring line.

Stiffness Damping Coefficient:

The stiffness proportional damping coefficient for the mooring line material. Refer to Damping Coefficients for further details.

Mass Damping Coefficient:

The mass proportional damping coefficient for the mooring line material. Refer to Damping Coefficients for further details.

Bending Stiffness:

The bending stiffness for the mooring line.

Torsional Stiffness:

The torsional stiffness for the mooring line.

Hydrodynamic Properties

Input:

Description

Normal Drag Coefficient:

The drag coefficient for the direction normal to the mooring line.

Tangential Drag Coefficient:

The drag coefficient for the direction tangential to the mooring line.

Normal Added Mass Coefficient:

The added mass coefficient for the direction normal to the mooring line.

Tangential Added Mass Coefficient:

The added mass coefficient for the direction tangential to the mooring line.

Notes

(a)Hydrodynamic loading on the mooring line is based on Morison’s Equation.