... stress transfer functions for unit loads at tower bottom and unit accelerations on the hull mass. Wave pressure RAO by unit amplitude wave is calculated using a wave radiation/diffraction analysis program, and stress RAO by wave pressure RAO is then calculated and converted into time domain using...

... heating technology electrically trace formula inductance offshore technology conference efficiency conductor capacitance transfer function eth cable eth cable model resistance B. Ansart , A. Marret , T. Parenteau , O. Rageot : Technical and Economical Comparison...

... frequency domain based finite element analysis (FEA) approach/design-tool to calculate the fatigue damage of piping systems due to FIV or AIV. For a FIV analysis, the two key steps that can be identified in this approach are: (1) the development of a transfer function, and (2) the generation of a pressure...

... Loggers (SVDLs) were run with the riser and retrieved via Remotely Operated Vehicle (ROV). Fatigue damage reconstruction in the wellhead, conductor and surface casing was performed directly using the measured motion data and an analytical transfer functions obtained from the calibrated Finite Element (FE...

... Current subsea wellhead fatigue monitoring systems typically measure subsea BOP stack response and convert accelerations directly to the stress on various critical wellhead components using transfer functions. The veracity of this process relies on the accuracy of input data and the numerical...

... of Spectral fatigue assessment explained here is adopted from API RP 2A-WSD [3] and ABS Fatigue Assessment Guideline [2]. Fatigue damage in this method is a product of stress spectrum which is produced by crossing the product of stress response transfer function and wave response spectrum in frequency domain...

... fatigue method has been recently developed and is based on analytical transfer functions used to convert measured accelerations into curvature. Another method considers FEA-based transfer functions. Some of these methods perform fatigue calculations in time domain while some others in frequency domain...

... transfer function, are generated using spectral fatigue method. Damage of the hot spots for a given sea state is carried out using products of the hot-spot stress response spectra. For reliability analysis, the limit state for fatigue damage is formed in terms of fatigue damage, fatigue capacity...

... noise frequency displacement motion measurement fatigue damage upstream oil & gas measurement device response measurement wellhead system calibration fatigue life bop transfer function assessment wellhead fatigue Presentation of OTC-25684-MS Presentation of OTC-25684-MS...

... and vessel-driven motions. A semi-analytical method was developed to estimate wellhead fatigue damage directly using the measured BOP stack motion data. High quality vibration data from the SVDLs were used in conjunction with analytical transfer functions to directly compute stress time histories and S-N...

... probability requirement subsea system sea state south china sea motion response transfer function response spectrum offshore technology conference OTC 24043 Liuhua 11-1 FPS Dry-dock Upgrade and Life Extension - Motion Analysis and Weather Window Selection for Towing L. Yang, H. Yang, S.G. Huang...

... uncertainty distribution at each unsampled location. The resulting collection of spatial distributions is subsequently inserted into physical models, which translate the geological parameters into financial or operational performance indicators. These models, the so called utility or transfer functions, can...

... well log data application artificial neural network neural network transfer function OA A A C T T re o re A D in m a N R T lo s b K I W p in p b ( ( N b t li s s u c s n TC 2296 rtificial pplicatio rvind Kumar opyright 2012, Offsho his paper was prepare his paper was selecte viewed by the Offsho...

... to obtain the motion response spectra of the support vessel and suction pile motions. The same transformation has been performed for the forces logged in the wire. By dividing the motion and force response function of the suction pile by the support vessel response spectrum the transfer function or RAO...

... for Classification of Ships Pt.3 Ch.1. supply boat procedure requirement statistics limit state floating production system loading condition structural design overview strength evaluation calculation upstream oil & gas offshore technology conference transfer function hull girder assessment...

... equipment, and re-injection facilities. requirement topside support stool fpso fatigue analysis dwt fpso stress contour subsea system support stool fatigue life riser support floating production system collision upstream oil & gas hencky-von mise stress contour transfer function...

... to account for the mooring loads, risers, bearings, etc. dataset procedure consideration subsea system longitudinal stiffener freight & logistics services grid area transfer function marine transportation requirement mooring system corrosion fatigue damage fatigue life severity...

... i +j T~' = III, I'll<' cubic transfer function He(i. J. lpn'sents till' stn'llgth of t hp i + j + ~. = IJ I intpractiOll. Detailed informatiun on dptprmining lfL. Hid all/] H" arp givpn in [G]. Hprp WI' SUIlIIlI,ll'izp thp kp\' idl'as, I'll<' approadl is based on nlinimizing t lH' nl/'an sqllm...

... payload configuration fatigue life reassessment cerveza ligera platform cerveza marshall deepwater development subsea system configuration transfer function platform service life spreadsheet inspection spectral fatigue analysis payload new deepwater development ABSTRACT...

.... Introduction The theoretical approach to mooring problems has been advanced considerably in the last decades. In 1971 theoretical knowledge of mooring systems did hardly exist. With the establishment of the 3-D diffraction theory in 1976, see Ref. 1, computations of the transfer functions of first order...