Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 10, Part 2American Society of Mechanical Engineers, 1991 - Arctic regions |
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Page 87
... FUZZY FACTORS IN ESTIMATION OF STRESS DISTRIBUTION 3.1 Fuzzy statistical method Fuzzy statistical method is a very useful tool for the description of estimation error . The fuzzy distribution of an estimated variable may be obtained and ...
... FUZZY FACTORS IN ESTIMATION OF STRESS DISTRIBUTION 3.1 Fuzzy statistical method Fuzzy statistical method is a very useful tool for the description of estimation error . The fuzzy distribution of an estimated variable may be obtained and ...
Page 88
... fuzzy relation matrix R : ( 12 ) ( 13 ) ( 1 ) First , to determine the long - term distribution of wave height H , that is : - P1 ( H ) = 1 − expl- ( CH ̧3 ] ( 18 ) The parameters C , Hc , D would be fuzzy variables , if the fuzzy ...
... fuzzy relation matrix R : ( 12 ) ( 13 ) ( 1 ) First , to determine the long - term distribution of wave height H , that is : - P1 ( H ) = 1 − expl- ( CH ̧3 ] ( 18 ) The parameters C , Hc , D would be fuzzy variables , if the fuzzy ...
Page 89
The fuzzy moments of the stress spectrum are defined as : ~ π = _ * S ( ∞ ) * dw д ( 24 ) Equation ( 24 ) is a fuzzy integral . The fuzzy probabilisty density function of s is expressed by the following formula : where 2πσ 2022 sa 202 ...
The fuzzy moments of the stress spectrum are defined as : ~ π = _ * S ( ∞ ) * dw д ( 24 ) Equation ( 24 ) is a fuzzy integral . The fuzzy probabilisty density function of s is expressed by the following formula : where 2πσ 2022 sa 202 ...
Contents
Occurrence of Extreme Waves With Respect to Significant Wave Height | 1 |
Spectral Modelling of Sea States With Multiple Wave Systems | 13 |
Statistical and Physical Models of Nonlinear Random Waves | 23 |
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amplitude applied approximation assumed bending bending moment calculated coefficient component computed condition considered correlation corresponding crack growth crack length crest damage damping defects defined density function design point deterministic distribution effect element Engineering equation estimated evaluation example failure probability Figueira da Foz Figure fracture mechanics frequency fuzzy Gaussian given hindcast inspection integral joints linear load lognormal maintenance matrix maximum mean value method mooring nonlinear normal normal distribution obtained offshore structures parameters partial safety factors plate platform probabilistic probability density probability density function probability of failure procedure random variables ratio redundancy reliability analysis reliability index repair residual stresses response sample seastates shear ship shown significant wave height simulation spectra spectrum standard deviation statistical stochastic Stokes storm strength stress range structural reliability surface system reliability Table tendon tion transfer function uncertainty variation vector Weibull Weibull distribution welded yield stress