Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 9, Part 2American Society of Mechanical Engineers, 1990 - Arctic regions |
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Page 107
... response is approximated by a Gram - Charlier expansion . The method is applied on a three degree - of - freedom model . The power spectrum of the response determined by the proposed method compares well with the one obtained by Monte ...
... response is approximated by a Gram - Charlier expansion . The method is applied on a three degree - of - freedom model . The power spectrum of the response determined by the proposed method compares well with the one obtained by Monte ...
Page 110
... response vector , îo ) , is the negative of the expected value of ( 2 ) . Therefore , < â ( t ) > formulated . = O as The displacement response transfer function vectors are obtained by expressing the steady - state displacement response ...
... response vector , îo ) , is the negative of the expected value of ( 2 ) . Therefore , < â ( t ) > formulated . = O as The displacement response transfer function vectors are obtained by expressing the steady - state displacement response ...
Page 112
... response at the surge natural frequency . This is the slowly - varying drift response and results from the quadratic force . It can be seen that the spectra obtained by simulation and equivalent stochastic quadratization are in good ...
... response at the surge natural frequency . This is the slowly - varying drift response and results from the quadratic force . It can be seen that the spectra obtained by simulation and equivalent stochastic quadratization are in good ...
Contents
Investigation of the Ergodicity Assumption for Sea States in the Reliability Assessment of Offshore | 1 |
OFFSHORE TECHNOLOGY PART | 19 |
Fatigue Loading | 33 |
Copyright | |
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analysis applied approach approximately assessment assumed average basic calculated coefficient component computed considered constant corresponding cost crack growth curve cycles damage defect density depends depth derived described determined developed deviation distribution drag effects Engineering equation equivalent estimated evaluated example expected extreme factor failure failure probability fatigue Figure force fracture frequency function geometry given important included increase indicated initial inspection integration joints limit linear load Lognormal material maximum mean measured mechanics method normal obtained offshore structures operation parameters performed period platform predicted present pressure probabilistic probability procedure random variable range ratio reference relative reliability represent requirements respectively response risk safety shown shows significant simulation standard statistical storm strength stress structure surface Table tension tether tubular uncertainty variables variation wave wave height weld