Model Summary |
 
|
Model Summary |
|
The riser in this example is 430m in length and is sited in 300m of water. It is filled with oil and attached to a production vessel. In order to accurately capture the deformation of the flexible riser, relatively short elements are used in the contact region.
The container is modelled as a rigid body using elements of high stiffness. Hydrodynamic properties are assigned via the buoy structure facility.
Contact between the falling container and the flexible riser is modelled using Flexcom’s line clashing feature. Potential contact areas are defined in the model, along with a relatively high contact stiffness. For added realism, auxiliary elements are used to visually replicate the crane structure.
The container recovery model concentrates on the lift aspect only and the riser is not included. It uses User Defined Elements where the buoyancy diameter of the salvage balloon elements are changed during the dynamic analysis via a user dll to replicate the inflation of the balloon. This allows the container to be lifted off the seabed and floated to the surface.