|
|
Used at initial stages, is an iterative process. Fluid forces in lines neglected. Uni-directional environment assumed. (waves, current and wind all from same direction)
For the Catenary equation click here.
Semisub is displaced in each mooring line direction to find total restoring force and tension in most loaded line as a function of displacement. This way the following mooring stiffness curve can be constructed:
Figure 3.1: Mooring stiffness curve
The equivalent stiffness of the mooring system is calculated as follows:
Now the following equation holds:
This way the forces at the maximum allowable/required dynamic offset can be estimated. Checks:
OK à analysis for system in which one line is broken NOT OK à re iterate Disadvantages of this method:
|
Send mail to
m.h.p.bijl@student.tudelft.nl with
questions or comments about this web site.
|