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 39
... RATIO EFFECTS Stress ratio is usually defined as R Kmin Kmin.cyc + Kres Kmax Kmax.cyc + Kres ( 33 ) where the subscripts ' cyc ' denotes the cyclic component of the total stress intensity , which is usually due to waves , and ' res ...
... RATIO EFFECTS Stress ratio is usually defined as R Kmin Kmin.cyc + Kres Kmax Kmax.cyc + Kres ( 33 ) where the subscripts ' cyc ' denotes the cyclic component of the total stress intensity , which is usually due to waves , and ' res ...
Page 40
... ratio which are functions of crack size and change as the crack grows . The choice between the equivalent block loading approach and the equivalent stress range approach should be based on the number of stress spectra to be analysed ...
... ratio which are functions of crack size and change as the crack grows . The choice between the equivalent block loading approach and the equivalent stress range approach should be based on the number of stress spectra to be analysed ...
Page 199
... ratio ( R ) , the importance of R is widely recognized . Gabetta ( 1986 ) found that when ex- pressed as a function of AK , the true corrosion fatigue crack growth rate in high temperature water is propor- - tional to the ratio between ...
... ratio ( R ) , the importance of R is widely recognized . Gabetta ( 1986 ) found that when ex- pressed as a function of AK , the true corrosion fatigue crack growth rate in high temperature water is propor- - tional to the ratio between ...
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