Tabular Output - Static Solution Summary (Part 1)

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Tabular Output - Static Solution Summary (Part 1)

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The first part of the Static Solution Summary section contains a summary of the fundamental model inputs (for example, pipeline geometric and structural properties) and some standard outputs computed by PipeLay (for example, pipe tension, touchdown, projected span length etc.). This section is included mainly for input data verification purposes. The figure below shows a sample static solution summary, along with definitions of the various parameters referenced.

 

Static Solution Summary (First Part)

Static Solution Summary (First Part)

 

Section Properties

For each component in your model the following is echoed:

1.Section Length – The length of the section.

2.Outside Diameter – The external diameter of the section.

3.Inside Diameter – The internal diameter of the section.

4.Weight/Length in Air – The dry weight or weight in air of the section per unit length.

5.Submerged Weight/Length – The submerged or wet weight (or weight in water) of the section per unit length.

6.Specific Gravity – The specific gravity of the section. This is equal to the dry weight of the section divided by the weight of displaced water, and is dimensionless.

7.Elastic Modulus - Young’s Modulus of the section material, for a linear material. In the case of nonlinear materials, the word Nonlinear is output.

8.Cross Sectional Area – The cross sectional area of the section.

9.Moment of Inertia - The moment of inertia (second moment of area) of the section.

10.Allowable Stress or Allowable Strain – The user-specified allowable stress or allowable strain of the section material.

 

Barge/Stinger Data

1.Maximum Tension – The maximum effective tension in the pipeline.

2.Number of Tensioners – The number of tensioners in the model.

3.Number of Vessel Constraints – The number of vessel boundary conditions in the model.

4.Number of Fixed Constraints – The number of fixed boundary conditions in the model.

5.Number of Rollerbox Supports – The total number of rollerboxes in your model.

6.Barge Heading – The initial undisplaced vessel orientation, measured anticlockwise from the global Y-axis.

7.Stinger Departure Angle – The vertical angle of the pipeline at the last support (that is, the support with the lowest vertical elevation), measured anticlockwise from the global Y-axis.

Stinger Departure Angle

Stinger Departure Angle

8.Stinger Stern Depth – The vertical distance below the waterline of the last support (i.e. the support with the lowest vertical elevation).

Stinger Stern Depth

Stinger Stern Depth

9.Vertical Rollerbox Reaction – The total reaction in the vertical direction from all of the rollerbox supports.

10.Horizontal Rollerbox Reaction – The total reaction in the horizontal direction from all of the rollerbox supports.

11.Stinger Tip Separation – The distance from the contact diameter of the pipe to the bottom of the last support on the stinger.

12.Water Depth – The water depth for the analysis.

13.Minimum Overbend Moment – This is the minimum moment in the pipeline from the tensioner down to the transition point between overbend and sagbend. This transition point is labelled OB-SB in the second static solution summary and main tables.

14.Maximum Overbend Moment – This is the maximum moment in the pipeline from the tensioner down to the transition point between overbend and sagbend. This transition point is labelled OB-SB in the second static solution summary and main tables.

15.Minimum Sagbend Moment – This is the minimum moment in the pipeline from the transition point between overbend and sagbend down to the seabed connection point (SCP). This transition point is labelled OB-SB in the second static solution summary and main tables.

16.Maximum Sagbend Moment – This is the maximum moment in the pipeline from the transition point between overbend and sagbend down to the seabed connection point (SCP). This transition point is labelled OB-SB in the second static solution summary and main tables.

17.Layback – The horizontal distance between the end of the Line component on the vessel and the touchdown point.

18.Bottom Tension – The tension at the touch down point (TDP).