Tether

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Tether

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Geometric Properties

Input:

Description

Minimum Mesh Density:

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

Maximum Mesh Density:

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

Diameter:

The diameter of the tether.

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 tether.

Mass per unit Length:

The mass per unit length of the tether.

Stiffness Damping Coefficient:

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

Mass Damping Coefficient:

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

Hydrodynamic Properties

Input:

Description

Normal Drag Coefficient:

The drag coefficient for the direction normal to the tether.

Tangential Drag Coefficient:

The drag coefficient for the direction tangential to the tether.

Normal Added Mass Coefficient:

The added mass coefficient for the direction normal to the tether.

Tangential Added Mass Coefficient:

The added mass coefficient for the direction tangential to the tether.

Notes

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