Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volumes 1-2American Society of Mechanical Engineers, 1991 - Arctic regions |
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Page 86
... fuzzy factor will exist in the prediction of the long - term stress distribution for offshore structures ( Fang & Chen , 1990 ) . The fuzzy uncertainties arise from the lack of sufficient information on what is concerned and the ...
... fuzzy factor will exist in the prediction of the long - term stress distribution for offshore structures ( Fang & Chen , 1990 ) . The fuzzy uncertainties arise from the lack of sufficient information on what is concerned and the ...
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 89
The fuzzy moments of the stress spectrum are defined as : = √ ( 0 ) xdw n ( 24 ) Equation ( 24 ) is a fuzzy integral . The fuzzy probabilisty density function of s is expressed by the following formula : where f¡ ( s ) = E 2πσ Si exp ...
The fuzzy moments of the stress spectrum are defined as : = √ ( 0 ) xdw n ( 24 ) Equation ( 24 ) is a fuzzy integral . The fuzzy probabilisty density function of s is expressed by the following formula : where f¡ ( s ) = E 2πσ Si exp ...
Contents
VORTEX SHEDDING AND VIBRATION | 187 |
OCEAN WAVES AND CURRENT | 209 |
COMPUTATIONAL METHODS | 247 |
Copyright | |
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added mass amplitude analysis approximately average body boundary condition cable calculated circular cylinder components computed correlation density diffraction displacement distribution drag coefficient dynamic effects Ekofisk Engineering experimental field Figure finite element floating flow fluid free surface frequency domain function Green function horizontal hydrodynamic hydrodynamic forces incident wave integral equation irregular waves length lift force linear load low-frequency matrix maximum measured method mode mode shapes mooring motion natural frequency nonlinear obtained Ocean Offshore Structures OMAE open boundary oscillation parameters phase velocity platform predicted present pressure problem random waves ratio response Reynolds number riser Sarpkaya seabed second-order ship simulation small forward solitary wave solution spectral spectrum stiffness surge tank tanker tension tether theory transverse values vector velocity potential vertical vessel vibration vortex vortices water depth wave drift damping wave forces wave height wave profile