Furthermore, an improved SCR–soil interaction model, with accurate prediction of soil stiffness and riser penetration enables us to more accurately predict global riser dynamic performance in the TDZ. The flexible riser top connection to the floating production platform is a critical region for fatigue lifetime (re)assessment.
It has been found that the TDZ responses result in the degradation of the seabed soil stiffness due to cyclic loading. During the simulations the seabed has been modelled using a hysteretic non-linear model in vertical seabed direction, and bilinear and trilinear models in the lateral seabed direction. Dynamic analysis was performed for different environmental conditions to identify the maximum effective tension on the towline. End force in global X direction on towline, obtained from static analysis was used to identify the Bollard Pull (BP) required for towing the SPU.
#BIBTEX ORCAFLEX SOFTWARE#
In the study reported in this paper, the vertical embedment and large lateral movements of the SCR in the TDZ were investigated. OrcaFlex software was used for towing analysis.
#BIBTEX ORCAFLEX CODE#
It is important to develop better understanding of the Steel Catenary Riser (SCR)–soil interaction mechanism to provide a realistic technique to predict the dynamic response and structural behaviour of the SCR in the Touchdown Zone (TDZ).This paper discusses the significance of SCR–seabed interaction in the design of SCR for deepwater applications and reports the results of an analysis of an SCR on soft clay in 910 m depth of water using the commercial code OrcaFlex for non-linear time domain simulation with a robust meshing technique.
0 kommentar(er)
