Subsea Pipeline Detail Fatigue Analysis - Force Model
Subsea Pipeline Detail Fatigue Analysis - Force Model
(OP)
Case: Subsea Pipeline Detail Fatigue Analysis by Force Model (Direct Wave)
Ref.: DNV-RP-F105 (Feb 2006), sec. 5.3.2
Question: To calculate the in line stress range (due to drag and inertia loads) I do not know what boundary conditions to be considered? (e.g. pin-pin or fix-fix, or etc)
Ref.: DNV-RP-F105 (Feb 2006), sec. 5.3.2
Question: To calculate the in line stress range (due to drag and inertia loads) I do not know what boundary conditions to be considered? (e.g. pin-pin or fix-fix, or etc)





RE: Subsea Pipeline Detail Fatigue Analysis - Force Model
RE: Subsea Pipeline Detail Fatigue Analysis - Force Model
It depends on where the span is. The span generated for crossing pipelines is different than a span on a rough seabed. However, if you need a detailed analysis, you definitely need the actual configuration of the span from a FEA. In this case, no boundary condition is required since it is inherent to the analysis.
Cheers
Steve
RE: Subsea Pipeline Detail Fatigue Analysis - Force Model