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Equipment fairlead points

Fairleads points are special nodes that belong to the equipment and can be connected with primary nodes of lines or any other object. These points can be defined with the Fairleads points tab and are listed in the grid placed in the lower part of the tab.

You can create new fairleads by clicking the Add new... button. These points can be removed by clicking the Delete connection point, which will delete the whole active row from the grid. Each fairlead point is defined by the following parameters :

  • Name: the name that will be used to refer to this point when connecting to another object.

  • X,Y,Z coordinates: these coordinates are given relative to the geometrical center of your equipment object (which is located at mid-height on the vertical axis), and expressed in the local coordinates system.

  • Built-in angle: the built-in angle defines a direction of reference with respect to the rigid body orientation. In case you connect a line end to this hang-off point using a pin connection, angular deflections could be output during post-processing. If the line is connected using a clamp, the direction of the line at the connection will be directly determined by the built-in angle. See more details...

    Tip

    Use the pop-up menu that displays when right-clicking over the 3D View window and activate the Show local axes option to display the local axes corresponding to your built-in angles. The local Z-axis corresponds to the local orientation of the line. This way, you can easily check whether you have correctly defined your ENCASD and PSID parameters.

    Note

    Built-in angles are defined by two parameters noted Elevation and Azimuth.

    • Azimuth is the rotation angle around the local Z-axis, and is positive from local X-axis towards the local Y-axis. Elevation denotes the rotation angle around the local Y-built-in axis which in turn depends on Azimuth.

    • Elevation depends on the line orientation, as shown in the sketch below :

  • Impose lines bending axes: By default, this option is not selected. Only the local vector Z is derived from the Azimuth and Elevation. This vector defines the reference axial direction of any lines connected to the fairlead. If the line is clamped to the fairlead, this axial direction is imposed to the line. If the line is pinned to the fairelad, the angle between this reference Z and the axis of the line corresponds to the so-called built-in angle. The two local bending axes (x,y) are automatically determined so that the local vector X is as close as possible to global X vector. I

If the option "Also impose lines bending axis" is switched on, the two local bending axes (x,y) are derived from the fairelad Azimuth and Elevation and are imposed to any line clamped to this fairlead.

Tip

You can copy/paste any part of the grid, which means for instance that you can import or export these data to MS Excel.