... factor governing the performance of challenging deep drillings. This study therefore focused on the fatigue failure of a drill pipe, which is caused by an axial dynamic tension resulting from ship motion and drilling operation under the condition that a bending stress is exerted, in challenging deep...

... be achieved. Table 1 shows the properties of typical carbon fiber composites. otc 11061 configuration correction carbon fiber water depth global performance comparison pretension stiffness steel tendon reduction subsea system strength upstream oil & gas dynamic tension composite...

.... PRASAD 5 time history for this 100-year storm case. Evidence of springing contribution due to second-order viscous forces can be seen in this figure. The total dynamic tension of 3,194 S. Tons shown above includes wave-frequency, low-frequency and high-frequency components of tension response. Wave...

... model test frequency spectrum correlation subsea system otc 7146 calculation mooring system frequency dynamic tension upstream oil & gas dynamic tension turret prediction low frequency procedure fpso model test dynamic analysis wind force test result fpso tanker fatigue...

... recovery esv iolair significant wave height wet-diving bell boom extension bell weight dynamic tension upstream oil & gas interface boom tip oscillation experiment investigation buoyancy frequency fluctuation cable tension subsea system OTC 5705 An Investigation...

... position. The line will essentially be in static equilibrium at all times. The tension perturbation can be calculated using a static catenary equation. procedure dwt tanker low frequency surge motion surge surge motion water depth turret subsea system dynamic tension low frequency motion...

.... coefficient scale 1 fairlead motion programme cable tension platform upstream oil & gas mathematical model maximum tension platform motion subsea system mooring system cable simulation guideline safety factor quasi-static design order motion dynamic tension model test gva 5000...

... perpendicular to the cable configuration at the midlength point (for example the first mode of a taut wire) involve large dynamic tensions, while the antisymmetric modes do not. In this paper a number of recently derived analytic solutions for the linear cable dynamics are presented and then used to determine...

... Abstract This paper presents the results of both theoretical and experimental studies on the dynamic tensions and motions of the multi-component mooring lines such as chain with clump weights and/or spring buoys. Especially, the author's attention is paid to analysis of the dynamic behavior...

... Abstract This paper is concerned with the problem of longitudinal resonant vibration of a 3,000 along disconnected riser. Theoretical investigations of natural frequencies and induced displacements and dynamic tensions-are presented, as well as practical investigations of riser longitudinal...

... or horizontally at its upper end, are observed by means of cinematography and the dynamic tensions induced are measured simultaneously. The results of those experiments reveal that the chain oscillates in one of the following four conditions as the frequency increases, namely, [I] Quasistatic condition, [II...

... deep-sea taut mooring in 10,000 ft of water, the dynamic tension is only a small fraction of the quasi-static tension, and the maximum dynamic tension is found to be at the top of the mooring line. The longitudinal hydrodynamic dragon-the rope surface is shown to be the predominant damping source...