Probabilistic Assessment of Degree of Bending in Tubular X-Joints of Offshore Structures Subjected to Bending Loads

Table 2

Estimated parameters of PDFs fitted to the density histograms of DoB samples.

Fitted PDF	Parameters	Estimated values
				DoBS-OPB			DoBD-OPB
Birnbaum-Saunders				0.90498; 0.0303296	0.813539; 0.093508	—	0.897649; 0.037795
Extreme value				0.91884; 0.0251115	0.853587; 0.0693142	0.688765; 0.190828	0.91473; 0.0318889
Gamma				1089.95; 0.000830676	116.665; 0.0070038	—	704.135; 0.00127574
Generalized extreme value				−0.342762; 0.0280815; 0.896484	−0.331497; 0.0772041; 0.79235	−0.286603; 0.19848; 0.518683	−0.325209; 0.0350571; 0.887031
Log-logistic				−0.0988711; 0.0177489	−0.201561; 0.05286	−0.56315; 0.219722	−0.106302; 0.0209965
Logistic		—	—	0.906074; 0.0160357	0.819049; 0.0427215	0.590133; 0.118319	0.899405; 0.0187924
Lognormal				−0.0998412; 0.0303511	−0.206291; 0.0934124	−0.596375; 0.386297	−0.107973; 0.0378179
Nakagami				273.263; 0.820492	—	2.2093; 0.386864	177.064; 0.80806
Normal (Gaussian)				0.905396; 0.0273892	0.817095; 0.074663	0.589015; 0.200225	0.89829; 0.0337215
Beta				97.8619; 10.2226	—	—	64.4534; 7.29193
Rician				—	0.813649; 0.0748107	0.546732; 0.209701	—
Weibull				—	—	0.657831; 3.29088	—