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 | 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