OCIMF_Mooring_Equipment_Guidelines_(Second_Edition)

Case' -UNGROOVED SURFACE

/3 = 90 '

Case 2 -SHALLOW-GROOVED SURFACE

rho·

~,

411'1'''' ~ ____ - - - ___ " ~ .............

,------~ --------~

./' -- ~ "-

./

Case 3 -DEEP-GROOVED SURFACE

FIGURE F1: THREE CASES OF A CHAIN BENT OVER A CURVED SURFACE

Cenain angles, shown in Figure F2. are of interest in analyzing chain tensiooed over a curved
urface. The angle between (he ccntrclines of two adjace nt chain links will be defin~'d as 0 '. This
is also (he angle subtended by rays from the centre of surface curvature to the centres of adjacent
links. The angle between the transverse axis of a chain link and tbe surface will be defined as p.
The angle 0 can be found as a funClion of the diameter ratio Did and the angle (J by the following
equation:

4

() = 2 arClaD --------

I + Did + 2.6 sin(J