(Untitled) (Untitled)(Untitled) (Untitled)(Untitled) (Untitled)(Untitled) (Untitled)(Untitled)Examples




IEVref:417-01-01ID:
Language:enStatus: Standard
Term: degrees of freedom, pl
Synonym1:
Synonym2:
Synonym3:
Symbol:
Definition: independent displacements and/or rotations that specify the orientation of a body or system

Note 1 to entry: A marine body can experience three linear and three rotational motions as depicted in Figure 1 and Figure 2. Positive angular and translational directions of displacement are shown by the axis labels +A, +B, +C, +D, +E, and +F.

Note 2 to entry: The principal axis is parallel to the mean water surface and aligned with the longest, plan form, dimension of the device. The principal axis for a symmetric device will be parallel to the mean water surface and aligned with a chosen direction of interest. The direction of incident energy will be through the centre of gravity and may be at an angle to the principal axis.

Key

A

Heave

D

Surge

G

Centre of gravity

B

Yaw

E

Roll

H

Incident energy at zero-degree heading

C

Pitch

F

Sway

 

 

Figure 1 – Six degrees of freedom – Floating device

Key

A

Heave

D

Surge

G

Centre of gravity

B

Yaw

E

Roll

H

Incident energy at zero-degree heading

C

Pitch

F

Sway

I

Seabed

Figure 2 – Six degrees of freedom – Submerged device


Publication date:2022-02
Source:IEC TS 62600-1:2020, 3.8
Replaces:
Internal notes:
CO remarks:
TC/SC remarks:
VT remarks:
Domain1:
Domain2:
Domain3:
Domain4:
Domain5: