Abstract Free-standing hybrid risers are vertical slender steel pipes that commonly used in the oil and gas industry. These structures subjected to complex hydrodynamic loads results fatigue damage. The tidal forces develop on Freestanding Risers (FSR) with buoyancy cans ( BC ) because of varying outer pipe dimensions investigated this work. study considered riser diameters 0.2, 0.3, 0.5 0.6 me...

The use of composite materials in offshore engineering for deep sea oil production riser systems has drawn considerable interest due to the potential weight savings and improvement in durability. The design of composite risers consists of two stages: (1) local design based on critical local load cases, and (2) global analysis of the full length composite riser under global loads and assessment ...

According to the geometric parameters of tension leg platform, test model was made with a scale ratio 1:61. The used conduct full-depth simulation uniform flow and wave current combination in pool. results showed that when reduced speed between 5.5 8.5, lateral motion response platform most significant. In interval speed, frequency transverse vortex-induced close natural resonance occurred. amp...