This example considers the analysis of a flexible riser deployed in a free-hanging catenary configuration. The riser is deployed in 705m of water and is connected to an FPSO. The example consists of a static analysis of the riser subjected to vessel offset and current, and a dynamic analysis of the riser subjected to wave loading and first-order vessel motions.
A number of important features of Flexcom are illustrated here. Of particular significance is the program’s ability to model buckling, both the onset of buckling instability and post-buckling behaviour. Other important program features invoked here are the non-linear bend stiffener facility, and the option to model a sloping seabed.
The free-hanging catenary riser configuration is shown in the figure below.
Free-Hanging Catenary