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 System determination
Flowchart: Alternate Process:  System determination
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Input

                                                                                

 

 

                                                                                                                                                                                                                                                             
NOT OK

                                                
Quasi static
                                                                   

                                                             
Static
                                                                                             
Dynamic

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Regulations

                                                                   
Fatigue
                                                                                                                                                           

                                                                                                                                                                                                                              

                                                                                                                                                                                                                               

                                                                                                                                                                                                                              
OK

                                                            

 

General remarks on the analysis of the mooring system

There are two types of  motion of spread moored semisubs:

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First order motions at wave frequencies

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Second order motions at low frequencies

As the second order motions often occur at the mooring system’s natural frequency (resonance), large translations can occur. Therefore the damping is important.

In the static analysis these dynamic effects are not taken into account, they are however in the quasi-static and to a larger extent in the dynamic analysis.

This website shows the principles of analyzing a mooring system. Several of these principles have been incorporated in commercially available mooring design software,

for an overview of available mooring design software see:

www.offshoreengineering.org (click button ‘mooring online’)

 

For the whole scheme click here.

 

 

 

       

                                                                     

 

 

 

Send mail to m.h.p.bijl@student.tudelft.nl with questions or comments about this web site.
Last modified: 10/16/06