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Introduction & Example Files

Introduction

Note

This example does not run in PipeLay Starter Edition unless you simplify the model by removing the Structure component from the line stack up as this particular component is disabled in Start Edition. Other simplifications are also automatically made in Starter Edition such as the loss of tip separation criteria and the use of the simple support contact modelling option. If you are using Starter Edition then you should ignore certain aspects of these articles, in particular parts of the ‘Results’ section.

 

Example 5 simulates a structure installation. The example considers the transition of an in-line structure along a pipeline, from the lay vessel to the seabed. The lay vessel is equipped with an S-Lay stinger fitted with V-shaped rollerboxes. The pipeline is restrained by a tensioner on the vessel deck. A buoy is attached to the structure by means of a cable. The analysis procedure is performed as a series of seven static analyses where the structure descends along the pipeline to the seabed. A desirable static configuration for each stage is obtained based on an optimum value for the tip separation. The two figures below illustrate the structure installation process. The first figure shows the initial configuration while the second shows the final configuration.

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Example Files

The input files for this example may be found in the directory ‘Example 05 – Structure Installation’, which is located in the Examples subdirectory of your PipeLay installation directory. The input files are as follows:

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