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Keywords: calculation
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Proceedings Papers

Paper presented at the The First ISOPE European Offshore Mechanics Symposium, August 20–22, 1990
Paper Number: ISOPE-E-90-021
... characterization veritec calculation modification natural frequency heimdal flareboom heimdal chord stavanger ABSTRACT The Norwegian Petroleum Directorate recommend the structural damping ratio of welded individual members to be taken as 0.15% of critical damping when evaluating vortex induced...
Proceedings Papers

Paper presented at the The First ISOPE European Offshore Mechanics Symposium, August 20–22, 1990
Paper Number: ISOPE-E-90-051
...PllILeedll1gs Ihe FII ,I (1990) ElIIopean Off,hOle MeLhann, SymposIUm TlOndhelm, NO! way, 20-22 Augu'l 1990 CopYlIghl © 1990 hy The InteinallOnal Souely aJOjj\hO/e and Palm Engll1eel' ISBN 0-9626104-4-5 BUCKLING CALCULATION OF OFFSHORE PLATFORM CONDUCTORS E Skomedal Ventec Hoevlk, Norway ABSTRACT...
Proceedings Papers

Paper presented at the The First ISOPE European Offshore Mechanics Symposium, August 20–22, 1990
Paper Number: ISOPE-E-90-058
...PI OL eedlng , of the FII ,t (1990) EUlopean OffshOle Meehan SymposIUm TI ol1dheJm, NOI way, 20-22 August 1990 CopvlIght © 1990 hy The 1I1IeJnatlOnai Souety ofOjfshOle and PolO! Engll1eels ISBN 0-9626104-4-5 EFFICIENT METHODS FOR THE CALCULATION OF DYNAMIC MOORING LINE TENSION KJell Lw sen and...
Proceedings Papers

Paper presented at the The First ISOPE European Offshore Mechanics Symposium, August 20–22, 1990
Paper Number: ISOPE-E-90-027
... stress process density histogram correction factor histogram probability distribution multi-linear son model frequency damage correction factor spectral shape son model total number probability density function offshore structure stress range procedure calculation sea state...
Proceedings Papers

Paper presented at the The First ISOPE European Offshore Mechanics Symposium, August 20–22, 1990
Paper Number: ISOPE-E-90-047
... stress analysis, together with strain hmlts which are not well defined This leads to inconsistencies with pipeline steel specifications which include plasticity effects A constitutive model for pipeline steels IS Introduced which allows the calculation of stresses and strains for sigmficant design cases...
Proceedings Papers

Paper presented at the The First ISOPE European Offshore Mechanics Symposium, August 20–22, 1990
Paper Number: ISOPE-E-90-054
... of the pipe Wellstream has developed a family of simple and accurate methods for calculating static failure and stiffness properties of flexible pipes. Degradation of risers may result from wear of the tensile armor wires as a result of slip during flexure. Wellstream has derived a formula for the...
Proceedings Papers

Paper presented at the The First ISOPE European Offshore Mechanics Symposium, August 20–22, 1990
Paper Number: ISOPE-E-90-018
... ABSTRACT This paper presents an outline of a comprehensive program system developed by the authors, which includes many functions for response analysis of a wide variety of offshore structures. Typical calculated results by this system are also presented being compared with field measurements...
Proceedings Papers

Paper presented at the The First ISOPE European Offshore Mechanics Symposium, August 20–22, 1990
Paper Number: ISOPE-E-90-063
... decrease. variation interaction strength equation adhesion structure building intensity ice strength granulated ice strength variation spray cone method air temperature calculation foundation ice building ice structure cross-section experimental result show upstream oil & gas...
Proceedings Papers

Paper presented at the The First ISOPE European Offshore Mechanics Symposium, August 20–22, 1990
Paper Number: ISOPE-E-90-008
... H LlU and C H Kln1 Texas A&M Umverslty College StatJon, Texas, USA x S Lu ShanghaI Jlao Tong Umverslty Shanghai, China ABSTRACT This paper presents the description of a higher- order boundary element method (HOBEM) for calculating linear hydrodynamic loadings on large floating bodies and comparison...
Proceedings Papers

Paper presented at the The First ISOPE European Offshore Mechanics Symposium, August 20–22, 1990
Paper Number: ISOPE-E-90-003
...PlOceedrng' of the FII ,t (1990) Ewopean Offshme MechanlL' SymposIum TlOndhefm, NO/way, 20-22 August 1990 COIf Ighl © 1990 "v The Inlel nalionol Souely of Offshm e and Pola! Engll1eels ISBN 0-9626104-4-5 ON THE MODELLING OF SHORT CRESTED SEA FOR STRUCTURAL RESPONSE CALCULATIONS Svene Havel StatOll...
Proceedings Papers

Paper presented at the The First ISOPE European Offshore Mechanics Symposium, August 20–22, 1990
Paper Number: ISOPE-E-90-038
... estimated to be 17%. The response from dead weight and wave forces, as well as the response from earthquakes is determined from the static space frame analysis. The platform was modelled in the same manner as for the dynamic response analysis. The final analysis was a series of calculations executed to...
Proceedings Papers

Paper presented at the The First ISOPE European Offshore Mechanics Symposium, August 20–22, 1990
Paper Number: ISOPE-E-90-033
... that certainly are important, the problem is still quite complex involving environmental statistics and response calculation. In principle, lifetime extreme response must be found from long-term statistics of the response parameter of concern. It is, however, quite laborious to establish this kind of...
Proceedings Papers

Paper presented at the The First ISOPE European Offshore Mechanics Symposium, August 20–22, 1990
Paper Number: ISOPE-E-90-004
... known linear response characteristics, placed on or around a floating structure. A model of the sea state which retains information about the amplitude, phase and direction can then be used to calculate the resulting non-'linear drift forces by means of known quadratic transfer functions. It is shown...
Proceedings Papers

Paper presented at the The First ISOPE European Offshore Mechanics Symposium, August 20–22, 1990
Paper Number: ISOPE-E-90-014
... Standcng BMT FlUid MechanIcs Limited Teddmgton, U K ABSTRACT Sample calculations illustrate uncertainties in predicting second-order wave forces and low-frequency motions of a large moored structure. The results, for a 'deep-draught floater' in regular and irregular waves, demonstrate sensitivity to...

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