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 112
... frequency peak is a resonance 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 ...
... frequency peak is a resonance 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 ...
Page 138
... frequency processes which contain a low frequency component and a high frequency component . The second term given by Eq . ( 50 ) contains products of the low- frequency process and a process at the wave frequencies , which results in a ...
... frequency processes which contain a low frequency component and a high frequency component . The second term given by Eq . ( 50 ) contains products of the low- frequency process and a process at the wave frequencies , which results in a ...
Page 140
... frequency domains for a compliant structure . Consi- dering that only the mean and low frequency parts of the viscous force and the viscous damping are important to the motion of a TLP , the close agreement of the mean and low frequency ...
... frequency domains for a compliant structure . Consi- dering that only the mean and low frequency parts of the viscous force and the viscous damping are important to the motion of a TLP , the close agreement of the mean and low frequency ...
Contents
Investigation of the Ergodicity Assumption for Sea States in the Reliability Assessment of Offshore | 1 |
OFFSHORE TECHNOLOGY PART | 33 |
Extreme Forces on Large AxiSymmetric Offshore Structures in Directional Seas | 49 |
Copyright | |
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amplitude applied assessment assumed axial basic variables behaviour calculated coefficient component computed considered corrosion cost crack depth crack growth rate CTOD curve defect deterministic drag force effects Engineering environmental equation estimated evaluated extreme failure mode failure probability fatigue crack growth fatigue damage fatigue failure fatigue reliability fatigue strength Figure fracture mechanics fracture toughness frequency Gaussian geometry hindcast initial inspection instability load integration limit state function linear Lognormal LRFD material maxima maximum mean value method nonlinear normal normal distribution North Sea obtained offshore structures parameters platform predicted pressure probabilistic probability density function probability distribution quadratic random variable ratio reliability analysis reliability index residual stresses response risk S-N curve safety sea-state significant wave height simulation spectral standard deviation statistical stochastic storm stress intensity factor stress range Table tension tether tubular joints variation vector weld weldments