Analysis Component

<< Click to Display Table of Contents >>

Navigation:  PipeLay > Example PipeLay Models > Example 07 - Start-up via Sheave >

Analysis Component

Previous page Next page

The Analysis component is used to specify the various inputs for a PipeLay analysis. The Analysis component allows you to gather together a set of components of various types, such as pipelines, vessels, waves and so on, from all of those defined in a project file, and to perform various types of analyses using these components. In this example, the Analysis component is named ‘Start-up via Sheave Analysis’. The following sections provide a description of the various inputs for the analysis.

 

Properties Tab

The Properties tab allows you to specify the options that are to be applied to all analysis stages of a particular model. In this example the Model is selected as ‘Model’ and the Contact Modelling option is defined as Simple.

 

Installation Stages Tab

The Installation Stages tab is where you define the various stages in your analysis. In this example there are eleven static installation stages.

 

Parameters Tab

The Parameters tab allows you to specify which parameters you want to change during each analysis stage defined on the Installation Stages tab. A summary of the parameters changed in each stage of this example is provided in the table below.

Table: Summary of Parameter Changes

Stage Number

Parameter

Value

2

Length of Pipeline(1)_24’’ Pipe(1)

150 m

2

Length of Pipeline(1)_Cable(1)

500 m

3

Length of Pipeline(1)_ 24’’ Pipe(1)

200 m

3

Length of Pipeline(1)_Cable(1)

450 m

4

Length of Pipeline(1)_ 24’’ Pipe(1)

250 m

4

Length of Pipeline(1)_Cable(1)

400 m

5

Length of Pipeline(1)_ 24’’ Pipe(1)

300 m

5

Length of Pipeline(1)_Cable(1)

350 m

6

Length of Pipeline(1)_ 24’’ Pipe(1)

350 m

6

Length of Pipeline(1)_Cable(1)

300 m

7

Length of Pipeline(1)_ 24’’ Pipe(1)

400 m

7

Length of Pipeline(1)_Cable(1)

250 m

8

Length of Pipeline(1)_ 24’’ Pipe(1)

450 m

8

Length of Pipeline(1)_Cable(1)

200 m

9

Length of Pipeline(1)_ 24’’ Pipe(1)

500 m

9

Length of Pipeline(1)_Cable(1)

150 m

10

Length of Pipeline(1)_ 24’’ Pipe(1)

550 m

10

Length of Pipeline(1)_Cable(1)

100 m

11

Length of Pipeline(1)_ 24’’ Pipe(1)

600 m

11

Length of Pipeline(1)_Cable(1)

50 m

 

 

Back to Overview

 

Criteria Tab

On the Criteria tab, you can specify installation criteria for each installation stage that is created in the Installation Stages tab. In this example, the same criteria are specified for each stage, as detailed in the table below.

Table: Tension Criteria Properties

Property

Value

Criteria

Tension

Type

Pipe Section

Component Name

Pipeline(1)_ 24’’ Pipe(1)

Location

End

Minimum Value

159 kN

Maximum Value

160 kN

Iterate On - Type

Component Length

Iterate On - Name

Pipeline(1)_Cable(1)

Iterate On - Vector

Global Y

Tolerance – Max Iterations

1000

Tolerance – Min Adjustment

0.001 m

Tolerance – Max Adjustment

50 m

Tolerance – Multi-Pass

Yes

 

Back to Overview

 

Summary Postprocessing Tab

You can use the Summary Postprocessing tab to request output from various parameters at crucial locations throughout the installation process. In this example, a number of parameters are selected for summary postprocessing, as detailed in the table below.

Table: Summary Postprocessing

Type

Component

Parameter

Criteria

Pipeline(1)_Pullhead(1)

Component Height

Criteria

Pipeline(1)_Cable(1)

Tension - End

Criteria

Cable(1)

Tension - Start

Criteria

Pipeline(1)_24’’ Pipe(1)

Von Mises Strain

 

 

Running the Analysis

You are now ready to run the analysis. While the analysis is running, you can observe the analysis progress and check for warnings or errors on the Progress tab.

Back to Overview